An Improved Brace for Drilling and like Purposes.
Year: 1899

page_text: Date of Application, 31st July, 1899
Complete Specification Left, 30th Apr., 1900-Accepted, 14th July, 1900
An Improved Brace for Drilling and like Purposes.
I, WILLIAM CHAMBERS ELLIOT, of Cumberland House, Stanhope Road, Westoe,
South Shields, Chief Engineer, do hereby declare the nature of this invention
to be as follows:-
My invention has for its object an improved brace for drilling and like purposes
by which I obviate the use of a pawl ratchet or spring and provide a brace which
is noisless in action simple in construction and is easily convertable from right
to left handed while at the same time it has no parts which can possibly get out
of order.
In carrying my invention into effect I provide a screw socket drill socket and
pair of double friction cones in one piece the body of which is mounted to revolve
in two bearing pieces one above the cones and another below these pieces also
form a support for the lever the fulcrum of which consists of a pin passing
through the said lever and being mounted in the bearing pieces a short distance
from the friction cones. The action of using the brace is as follows when the
handle of the lever is pulled in a forward direction it slightly turns on it fulcrum
with the result that the nose end engages with the cones which it is shaped to
fit and thus carries the body of the drill round with it a projection being formed
on one side of the lever so that on the return of the lever it is prevented from
turning upon its fulcrum sufficiently to engage with the cone while moving in
the reverse direction. For altering the brace from right to left handed it is only
necessary to take out the fulcrum pin and reverse the lever and insert the pin
again:
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7
1
1000
An Improved Brace for Drilling and like Purposes.
I, WILLIAM CHAMBERS ELLIOT, of Cumberland House, Stanhope Road, Westoe,
South Shields, Chief Engineer, 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:-
My invention has for its object an improved brace for drilling and like purposes
by which I obviate the use of a pawl ratchet or spring and provide a brace
which is noisless in action simple in construction and is easily convertable from
right to left handed, while at the same time it has no parts which can possibly

page_text: get out of order, and at the same time is easy to manipulate and cheap to manu-
facture. In order that my invention may be clearly understood and more easily
carried into practise I have appended hereunto a sheet of drawings upon which
I have fully illustrated the nature of my said improvement.
Figure 1 is a general view of my improved brace.
Figure 2 is a part sectional elevation of Figure 1.
Figure is an horizontal section shewing the lever in action.
Figure 4 is a similar view to Figure 3 but shewing the lever out of action.
In carrying my invention into effect I provide a screw socket a drill socket aª
and double friction cone a³ the body A of which is mounted to revolve in two
bearing pieces B and B one above the cones and the other below, these pieces also
form a support for the lever D, the fulcrum of which consists of a pin C passing
through the lever and being mounted in the aforesaid bearing pieces a short dis-
tance from the friction cones having a head and nut for attaching same in
position. The action of using the brace is as follows: when the handle of the
lever is pulled in a forward direction it slightly turns on its fulcrum C
with the result that the nose end which is shaped eccentrically to the cones a
frictionally engages with them thus carrying the body A which supports the
drill or tool round with it, a projection being formed on one side of the lever
so that upon the return of the lever it is prevented from turning upon its fulcrum
sufficiently to engage with the cones while moving in the reverse direction.
For altering the brace from right to left handed, it is only necessary to take out
the fulcrum pin C reverse the lever and insert the pin again. I may vary the
shape of the nose d' and cones by reversing them and forming the groove a³
on the lever and the nose on the circular friction block.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
1 claim is:
1st. An improved brace for drilling and like purposes having double cones
such as in combination with the lever D having a fulcrum C and actuating
nose shaped eccentrically to the cones and frictionally engaging with them
substantially as herein set forth and illustrated.
2nd. The combination of a circular revolving friction block with a pivoted
lever having nose shaped and mounted eccentrically for engagement with
the block and a stop to same substantially as herein set forth and illustrated.
Dated this 28th day of April 1900.
LEWIS WM. GOOLD,
Agent for Applicant, 5, Corporation Street, Birmingham.