An Improved Combined Carpenter's Brace and Ratchet Brace.
Year: 1892

page_text: Date of Application, 6th Sept., 1892
Complete Specification Left, 6th June, 1893-Accepted, 22nd July, 1893
PROVISIONAL
SPECIFICATION:
An Improved Combined Carpenter's Brace and Ratchet Brace.
I, ARTHUR CHURCHILL FISHER, of Clarence House, Coseley, near Bilston, in
the County of Stafford, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the manner in which I construct and arrange ratchet
braces and boring bits whereby I am enabled to vary the speed of rotation of the
cutter to suit the material which is to be operated upon.
In carrying my invention into effect when constructing a ratchet brace for use in
boring wood, metal or other material I make the hand lever or brace portion in
two distinct parts one being arranged inside the other, and each-capable of giving
independent motion to the boring bit or drill when turned by hand. The outer
bow lever or cranked arm I make with an upper support or hand rest upon the
central portion of the lever, and for further convenience I provide a ring or loop
upon the cranked portion of the lever for the arm of the operator to pass through.
The lower end of the cranked lever I form as a boss for receiving the chuck or
drill holder spindle.
The upper end of the drill holder spindle or chuck spindle I cause to project
beyond the boss for the purpose of receiving a toothed wheel or pinion, and I
cause this pinion to gear or work into another toothed wheel driven by means of
the inner cranked lever. This inner bent arm or cranked lever I prefer to make
I cause
such that it will pass freely within the cranked portion of the outer lever.
the upper end of the inner lever to be bent or formed so as to work upon a centre,
or within a boss or bracket, secured to the inner crank; while the lower end of
the same lever I cause to carry the toothed wheel which drives the drill spindle
pinion, and also to carry the ratchet disc into which the two driving ratchets work.
I sometimes form the ratchet wheel and the tooth wheel as one piece, by providing
ratchet teeth upon the upper surface of the gear wheel; or I arrange an independent
ratchet disc or wheel above the ordinary gear wheel and mounted upon the same
spindle or end of the inner arm.
Upon the inner crank lever I mount a pair of ratchet or driving pawls for
engaging with the teeth of the ratchet wheel, these pawls being provided with
springs, and also with a catch or catches for keeping one or both out of the teeth
when such is desired.
I carry any ordinary form of chuck or holder upon the end of the crank spindle,
and I secure the drill or cutter within the chuck in the usual ordinary manner.
•
Dated this 5th day of September 1892.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents.
COMPLETE SPECIFICATION. .
An Improved Combined Carpenter's, Brace and Ratchet Brace.
J, ARTHUR CHURCHILL FISHER, of Clarence House, Coseley, near Bilston, in
the County of Stafford, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
This invention relates to the manner in which I construct and arrange ratchet

page_text: braces and boring bits whereby l. am. enabled to vary the speed of rotation of the
cutter to suit the material which is to be operated upon.
In the two accompanying sheets of drawings to be hereinafter referred to, I
illustrate the manner in which I carry my invention into effect when constructing
a ratchet brace for use in boring wood,.metal or other material.
1
Figure 1 is a front elevation with the drill,holder and gearing end also the
upper or hand rest end shown in section, and Figure 2 is a sectional plan of the
same form of brace for quick or variable speed which I sometimes employ.
Figure 3 is a part sectional elevation of another form of my improved variable
speed drill and ratchet brace, showing modifications of the method of construction,
and Figure 4 is a reverse plan of the same with the outer bent arm or lever A
broken off.
I make the band lever or brace portion in two distinct parts A. B, one part B
being arranged inside the other, A, and each capable of giving independent motion
.to.the boring bit or drill holder C when turned by hand. The outer bow lever or
cranked arm A I make with an upper support or hand rest D upon the central
portion of the lever, and for further convenience I provide a ring.or loop .E, upon
the cranked portion of the lever A for the arm of the operator to pass through.
The lower end of the cranked lever A. I form, as a boss E for receiving, the chuck
.or drill holder spindle.
The upper end of the drill holder spindle or chuck spindle F I cause to project
beyond the boss E for the purpose, of receiving a toothed wheel or pinion. G,,and I
cause this pinion G to gear or work into another toothed wheel Hidriven, by means
of the inner cranked. lever B. This inner bent.arm or cranked lever BI prefer to
make such that it will pass freely within the cranked portion of the outer lever A.
I. cause the upper end of the inner lever to be, bent or formed so as to., work. upon
a.centre a, or within. a boss or bracket a¹ (Figure 3,) secured to the outer crank;
while the lower end of the same lever I cause to carry the toothed wheel H
or Hwhich drives the drill spindle pinion, G, or, G1 and also to carry the ratchet
disc. K into which the two.driving ratchets L L work. I sometimes.form-the
ratchet wheel K and the tooth wheel as one picce or mounted one piece, above the
other as shown.in Figure 3. and Figure 4, the ratchet teeth being then arranged
preferably, upon the upper surface of the gear wheel; or I arrange, an independent
ratchet disc, or wheel above the ordinary gear wheel, and mounted upon, the same
spindle O or end 6 of the inner.arm.
Upon the inner crank lever I mount a pair of ratchet or driving pawls, LL' for
engaging with the teeth of the ratchet wheel, these, pawls being provided with
springs. M. and also with a catch or catches N.N' the catches being used for
keeping one, or both.out.of the teeth when such is desired.
When drilling through hard material in which the slowest speed is desirable, I
prefer to remove the inner lever. B from the outer. arm. A and to rotate, the drill or
cutter by turning the outer lever.or. arm A direct.
I carry any ordinary form of chuck or holder Cupon the end of the crank-lever
or spindle A, and I secure the drill or cutter within the chuck in the usual ordinary
manner.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination, and arrangement, of parts-forming, a variable speed or
alternative speed ratchet brace or hand drilling or boring appliance, substantially
as herein before described and as illustrated in the accompanying drawings.
2. The construction of ratchet braces or hand drilling appliances in which one
arm or operating bow or lever such as B works within the outer arm or operating
lever such as A for the purposes herein before described and as illustrated in the
accompanying drawings.

page_text: 3. In a ratchet brace or hand drilling or boring apparatus, the arrangement of
gearing for causing the drill or bit to rotate or travel at a greater speed than the
operating arm or lever, substantially as hereinbefore described and as illustrated in
the accompanying drawings.
Dated this 5th day of June 1893.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicant.