Numbers and Sizes of Channels—Sizes of Verges, Pawls and Ears of Matrices.

Character. No. of Channel. Size of Channel. Size of Verge. Size of Pawl. Size of Ear of Matrix.

e1 50 60 40

e2 5075 60 40

t3 5045 45 40

a4 6070 60 50

o5 5065 55 40

i6 4040 35 33

n7 6075 70 50

s8 5060 50 40

h9 6070 70 50

r10 5060 50 40

d11 6070 70 50

l12 4040 35 33

u13 7075 70 60

c14 6065 60 50

m15 90105 100 80

f16 5075 55 40

w17 9090 90 80

y18 6070 70 50

p19 6070 70 50

v20 6070 70 50

b21 6070 70 50

g22 6070 70 50

k23 7090 75 60

q24 6070 70 50

j25 4050 50 23

x26 7090 75 60

z27 5060 60 40

fi28 6070 70 50

fl29 6075 70 50

ff30 7095 85 60

ffi31 90105 105 80

ffl32 90105 105 80

em33 90140 140 80

,34 4040 35 33

.35 4040 35 33

:36 5070 65 40

;37 5075 65 40

?38 6070 70 50

Fig39 60125 70 50

(40 4055 45 33

|41 4090 90 33

‘42 4045 35 33

!43 5065 65 40

-44 4050 45 33

Thin45 4040 35 33

)46 4040 40 33

.47 6060 60 50

’48 4035 35 33

*49 6055 55 50

150 6070 70 50

251 6070 70 50

352 6070 70 50

453 6070 70 50

554 6070 70 50

655 6070 70 50

756 6070 70 50

857 6070 70 50

958 6070 70 50

059 6070 70 50

$60 6070 70 50

‥61 100100 95 90

E62 9095 95 80

T63 80100 95 70

A64 90100 100 80

O65 80100 100 70

I66 6055 55 50

N67 90100 100 80

S68 7075 75 60

H69 100110 110 90

R70 9095 95 80

D71 90105 105 80

L72 8085 85 70

U73 90105 105 80

C74 7075 75 60

M75 100110 110 90

F76 8095 95 70

W77 110145 145 100

Y78 90100 100 80

P79 8085 85 70

V80 90105 105 80

B81 8095 95 70

G82 80105 105 70

K83 90110 110 80

Q84 8095 95 70

J85 6075 70 50

X86 90110 110 80

Z87 7095 95 60

@88 9085 85 80

℔89 9085 85 80

& £90 6085 85 50

—91 90125 125 80

Pi92 100

All figures, except in numbers of channels, in thousandths of inches.

*Channel No. 39 takes .125 verge and .70 pawl.

Transcriber’s Notes:

Page 28, “metalic” changed to “metallic” (“its reduction to the metallic”).

Page 42, “partion” changed to “partition” (“the right hand partition for”).

Page 60, “sprin” changed to “spring” (“keyboard keybar spring F”).

Page 60, “apiece” changed to “a piece” (“soldering a piece on the bottom”).

Page 70, “groves” changed to “grooves” (“or the small grooves which”).

Page 79, title “Keyboards.” added.

Figures 12 and 13, and 29 and 30 appear in an inverse order in the original. This has been preserved.

On page 78, some characters may not render correctly with some machine/format combinations. An illustration of the section of the page in question is included here:

Original images of this book can be found here.