The following has been taken from the Field Papers (1811-1872) Volume 2 folio 57 held in the Science Museum Library:
Charles Babbage Esqre
Dr To Joseph Clement of Southwark
To a Machine for Calculating Consisting of the under mentioned Materials as far as finished 31st Decr 1831
Page of Previous Accts
References to Articles in Previous Accts
1 7 To adjusting the ends of 4 of the long plates for Sixth difference Axis.
1 4 To adjusting the ends of 3 of the long framing plates for Type Sector Axis and Snail Axis.
1,8&9 5,6,7 To filing out a recess in 84 of the Gun Metal
8&9 framing plates for on end of the detent to go in.
122 25 Additional Gun Metal framing plates for
123* supporting the intermediate Axis rough turned*, caps fitted and screwed to them for retaining the intermediate Axis.
124 50 Steel Screws for fixing the above caps to the framing plates.
126 50 Steel Screws for fixing the Caps of bolting Axis to framing plates.
14 12 Additional Gun Metal Sockets or pillars 3 1/8
in long for supporting and regulating the space between the framing
plates having a Cylindrical hole in the middle for the framing bolts to
pass through and smooth turned.
15 71 Additional Gun Metal Sockets or pillars similar to the above but only 1 5/8 ins long bored and smooth turned.
16 6 Additional Gun Metal Sockets or pillars similar to the above but only 1 9/16 ins long and smooth turned.
17 6 Additional Gun Metal Sockets or pillars similar to the above but only 1 ¼ ins long and bored and smooth turned.
18 72 Additional Gun Metal Sockets or pillars similar to the above but only 1 2/16 ins long bored and smooth turned.
129 15 Gun Metal Sockets
or pillars for supporting the bottom framing plates at a proper distance
from the upper platforms of the following lengths
3 [of] 1 31/32 ins 4 [of] 2 1/32 ins
4 [of] 2 13/16 ins 2 [of] 4 11/32 ins
2 [of] 5 27/32 ins long bored only.
130 7 Gun Metal Castings
of Sockets or pillars for supporting the upper platforms at a proper
distance from the General Platform 4 of these have a Cylindrical hole in
the centre for the short framing Bolts to pass through, 1 of the above 4
pillars has a stud on one Side.
131 13 Gun Metal Sockets
or pillars with square ends for supporting the upper platforms at a
proper distance from the General Platform bored and partly turned, the
square ends smooth filed.
10 19 To boring 12 Gun Metal lower Calculating Wheels
19 6 Additional Gun Metal lower Calculating Wheels bored only.
20 80 Additional Gun Metal Castings of double inclined planes for causing unbolting.
22 6 Additional Gun Metal Arms for preventing bolting bored and partly turned.
23 10 Additional Gun Metal Catch Wheels and 40 bored and partly turned.
21 80 Additional Steel
Screws with slit heads for screwing together Catch Wheels, Arms for
preventing bolting, lower Calculating Wheels, and double inclined
planes.
24 6 Additional Gun Metal Castings of upper Calculating Wheels bored only (there are now 36 in the same state).
11 25 The fixed parts of 34
Gun Metal Bolts bored and turned parallel, parallel notch cut in each
end for the moveable part of the Bolt to slide, and edges smooth filed.
25 Additional fixed parts of Bolts in a similar state to the above (there are now 40 in the same state).
27 The moveable parts of 34 Gun Metal Bolts bored and turned parallel, but the edges not yet filed.
27 Additional moveable parts of Bolts in a similar state to the above (there are now 40 in the same state).
28 12 Additional Gun Metal Castings of bolting pieces.
29 160 Additional Steel
Screws with slit heads for fixing the bolting pieces to the moveable
part of the Bolts, one half of these Screws have long heads which act
against the double inclined planes and causes unbolting.
32 6 Additional Castings of Carrying Levers.
34 5 Additional Castings of Catches for Carrying Levers.
38 5 Additional Castings of Bridges for Carrying Levers.
132 132 Gun Metal Spiral
Spring Cases for Carrying Levers bored turned and a female screw cut in
one end, the other end is spherical but the hole is not yet bored for
receiving the Screw for fixing it to the Arm of Carrying Lever.
133 132 Gun Metal Screw
Nuts with milled heads fitted to the above Cases, a hole bored through
the centre for the piston Rod to pass through.
134 132 Gun Metal piston
Rods one end is spherical but the hole is not yet bored for the Screw
which fixes it to the framing plates, the other end has a screw cut in
it to retain a Screw Nut for adjusting the strength of the Springs.
135 132 Gun Metal Screwed Nuts fitted to the above piston Rods and filed to a hexagonal figure.
136 132 Gun Metal Washers
for keeping the ends of the above Spring Cases at a proper distance from
the framing plates, smooth turned.
3,11 43 To fitting 76 Gun
Metal figure Wheels to roller Wheels for pointing out Nines and a Screw
cut on the bottom of the Socket.
11 43 To turning 30 Gun
Metal figure Wheels and fitting them to roller Wheels for pointing out
the Nines and a Screw cut on the bottom of the Sockets.
43 6 Additional Gun Metal
figure Wheels bored turned and fitted to the roller Wheels for pointing
out Nines and a Screw cut on the bottom of the Sockets.
10 110 To smooth turning 106 Gun Metal roller Wheels for pointing out Nines.
110 6 Additional Gun Metal roller Wheels for pointing out Nines bored and smooth turned.
111 6 Additional Gun Metal Nuts for fixing the above Wheels to figure Wheels bored tapped and turned but the Arms not filed up.
9 68 To boring turning and smooth filing 30 Gun Metal blinds for figure Wheels.
68 6 Additional Gun Metal blinds for figure Wheels bored turned and smooth filed.
104 30 Additional Steel Screws with slit heads for fixing the above blinds to the Axes.
11 44 To turning 30 Gun
Metal bolting Arms the eccentric part for locking the roller Levers is
not yet adjusted nor the holes bored for the Steel Studs.
44 6 Additional Gun Metal bolting Arms in a similar state to the above.
45 36 Additional Steel screwed Studs for the above bolting Arms.
46 36 Additional Gun Metal
bolting Levers bored turned and partly filed, the ends of the Levers
are not yet adjusted nor the holes bored for the Steel Studs.
47 36 Additional Steel Screwed Studs for the above Levers.
10 101 6 Additional Gun
Metal double Spiral Spring Cases for retaining the bolting Levers in
intermediate position with Nuts pistons etc. similar to those described
in last account.
54 4 Additional Gun Metal
double ended Roller Levers for Snail Wheels bored turned and smooth
filed a notch cut in the long end for receiving a Steel Roller, hole
drilled and tapped for receiving a Screw on which the Steel roller
turns, hole drilled and tapped for receiving a Screw for fixing the
Spring Cases to them, the tails of the Levers not yet adjusted.
56 4 Additional Gun Metal
single ended bent Roller Levers for Snail Wheels bored turned and smooth
filed holes drilled and tapped for receiving Screws for fixing the
Spring Cases to them the ends of the Levers not yet finished.
53 4 Additional Gun Metal
double ended bent roller Levers for first difference Wheels bored turned
and smooth filed a notch cut in the long end for receiving a Steel
roller, holes drilled and tapped for receiving a Screw on which the
roller turns, holes drilled and tapped for receiving the Screws for
fixing the Spring Cases to them.
52 32 Additional Gun Metal double ended bent roller Levers for 2d, 3d, 4th, 5th & 6th
difference Wheels bored turned and smooth filed, a notch cut in the
long end for receiving a Steel Roller, a hole drille and tapped for
receiving a Steel Screw on which the Steel roller turns, holes drille
and tapped for receiving the Screws for fixing the Spring Cases to them.
59 18 Additional Gun Metal
single ended roller Levers bored turned and smooth files, holes drilled
and tapped for receiving the Screws for fixing the Spring Cases to
them.
60 34 Additional Steel Screws with slit heads for the roller Levers 16 right handed 18 left.
58 4 Additional Steel Screws with slit heads for Rollers of double ended Roller Levers 2 right handed 2 left.
4 63 3 Additional Gun Metal Spiral Spring Cases for Roller Levers similar to those described in the first account.
127 18 Gun Metal Spiral Spring Cases for roller Levers of sixth difference nearly similar to those above.
128 18 Gun Metal Studs for
holding one end of the above Spring Cases, smooth turned, with a Screw
cut in one end, for screwing them to framing plates the other end has a
tapped hole for receiving a Screw for fixing the Spring Cases to them.
10 67 To turning 35 Gun
Metal roller Arms for pointing out Nines, slit cut in the end for
receiving a Roller holes drilled and tapped for receiving the Screws for
fixing the rollers.
67 5 Additional Gun Metal
Roller Arms for pointing out Nines, bored turned and smooth filed, a
slit cut in the end for receiving a Roller, holes drilled and tapped for
receiving the Screws for fixing the rollers.
105 36 Additional Steel
Screws with Capstan heads and 4 with slit heads for fixing the Rollers
in the ends of the Roller Arms for pointing out the Nines.
10 112 To smooth turning 127 Gun Metal detents for Carrying Levers, but the Arms not filed up.
112 6 Additonal Gun Metal detents for Carrying Levers bored and turned, but the Arms not filed up.
11 118 To turning and smooth filing 106 Gun Metal Carrying Arms.
118 6 Additional Gun Metal carrying Arms bored turned and smooth filed.
11 121 To turning 7 Gun Metal bevel wheels for horizontal carrying Axis.
10 115 To turning 7 Gun Metal bevel wheels for horizontal bolting Axis.
137 3 Gun Metal double bevel wheels for horizontal Calcualting Axis bored only.
6 Gun Metal Clutches for
locking the Vertical Calculating Axes to their bevel wheels and also for
locking the axis to the upper platform(s?), each clutch consists of
three
138* parts First*
the bottom part (which is intended to be fixed to the Axis) consists of
a Cylindrical Socket having a flanch on the lower part of it the same
diameter as the flanch on the upper part of the Socket of the
139* Bevel Wheels, Second*
the sliding or middle part of the Clutch having a Cylindrical hole
throught it the upper end of which is fitted to the Axis and the lower
end to the Socket of the fixed part of the Clutch so as to slide freely
up and down, the lower end of the sliding part of the Clutch has a
f;anch or Collar equal in diameter to that of the fixed part of the
Clutch but the holes are not [yet] made in the flanches for containing
the studs which lock them to the Bevel Wheels on the upper end of the
sliding part of the
140* Clutch is screwed a flanch*
or Collar equal in diameter to that of the lower end, and in which the
Studs are intended to be fixed for locking it to the underside of the
upper platforms, but the holes are not yet made for the Studs, between
the shoulder on the under side of the upper flanch and the shoulder on
the middle part of the sliding part of the Clutch is formed a recess or
part of less diameter, in the recess or part between the shoulders is
intended to be fitted a Ring or Collar so as to turn freely, to the Ring
will be connected the end of a Lever for moving the Clutch up and down.
141} 7 Gun Metal Clutches for locking the Vertical
142} bolting Axes to their bevel wheels and also
143} for locking the Axis to the upper platform similar to those described for the Calculating Axis.
144} 7 Gun Metal Clutches for locking the Vertical
145} Carrying Axes to their bevel Wheels, similar to those described for the Calculating Axis,
146* except the
Screwed Collar on the upper part of the sliding part of the Clutch is
only the same diameter as the shoulder in the middle of it.
147 6 Gun Metal Levers for putting the Calculating Axis in and out of Gear, bored only.
148 6 Gun Metal Carriages
for supporting the above Levers smooth filed bored and tapped for
receiving a Screw for the Levers to turn on.
149 7 Gun Metal Levers for putting the bolting Axis in and out of Gear bored only.
150 7 Gun Metal Levers for putting the Carrying Axis in and out of Gear bored only.
157 7 Gun Metal Levers for putting the intermediate Axis in and out of Gear bored only.
152 6 Gun Metal double ended Brackets and Six*
153* single
ended for supporting the full-crums of the Levers for putting the
Carrying and intermediate Axis in and out of Gear partly filed.
154 1 Gun Metal Roller Lever for retaining the horizontal Carrying Axis in a certain position bored only.
155 1 Gun Metal Carriage for supporting the above Lever partly filed.
156 1 Gun Metal Roller Lever for retaining the horizontal bolting Axis in a certain position, bored only.
157 1 Gun Metal Carraige for supporting the above lever partly filed.
158 } 4 Gun Metal Brackets for Supporting the ends
159*} of the barrel Axis and two*
for supporting the middle of the Barrel Axis and also the ends of the
brass Axis which communicates the motion from the barrel Axis on the
carrying side of the Machine to the barrel Axis on the bolting side, the
Brackets have caps fitted and screwed to them, bored and smooth filed.
160 A Gun Metal Wheel
called the forty eigth [48] wheel which is intended to be fitted on the
barrel Axis bored and rough turned.
161 1 Gun Metal Wheel
intended to have forty eight moveable teeth which is to give motion to
the forty eighth [48] Wheel on the Barrel Axis.
162 13 Gun Metal Castings of Barrels
163 6 Gun Metal Spiral
Spring Cases which are intended to be connected to Levers for putting
the Calculating Axis in and out of Gear bored, a female Screw cut in one
end and the outside turned.
164 6 Gun Metal Spiral
Spring Cases which are intended to be connected to the Levers for
putting the bolting Axis in and out of Gear bored, a female Screw cut in
one end and the outside turned.
165 7 Gun Metal Spiral
Spring Cases which are intended to be connected to the Levers for
putting the Carrying Axis in and out of Gear, bored, a female screw cut
in one end and the outside turned.
166 4 Gun Metal Spiral
Spring Cases intended to be connected to the ends of the Roller Levers
which holds the Carrying Axis in a certain position bored a female screw
cut in one end and the outside turned.
167 1 Gun Metal Spiral
Spring Case intended to be connected to one end of a Roller Lever for
retaining the horizontal Carrying Axis in a certain position bored, a
female Screw cut in one end and the outside turned.
168 1 Gun Metal Spiral
Spring Case intended to be connected to one end of a Roller Lever which
Lever Retains the horizontal bolting Axis in a certain position bored, a
female Screw cut in one end and the outside turned.
169 1 Gun Metal Spiral
Spring Case intended to be connected to an Arm of the Roller Lever which
Lever retains the Barrels in any required position bored, a femal Screw
cut in one end and smooth turned.
170 } A Gun Metal Casting of General Platform for
171*} the Calculating end of the Machine, and Four* Corner pieces for fixing the Columns to the Platform.
Amounting to £1720-14-4
By errors in the Account 4-18-0
£1725-12-4
(Signed) Feby 17th 1832 Bryan Donkin
Joshua Field
[Loose Sheet pasted in Account]
Errors in Mr Clements Accot [25th June to 31st December 1831] for Mr Babbage's Machine 17th Feby 1832
Too Little Too Much
1st Page £ 0 - 5 - 6 4th page £0 - 11 - 5
- 4 - 7 3
2nd 0 - 9½ 5th 0 - 2 - 9
0 - 1 0 - 0 - 1½
3rd 1 - 6½ 8th 0 - 2 - 0
0 - 0½ 0 - 0 - 0¼
0 - 3 £0 - 16 - 63/4
4th 7
7 1
4
½
8 9
5 - 0 - 0
£5 - 14 - 7
16 - 63/4
£4 - 18 - 0¼ too little
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