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Патент USA US2106112

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original Filed July so', 1956
Patented Jan. 18, 1938
Martin Bonato, Santa Barbara, Calif.
Application July 30, 1936, Serial N0. 93,509
Renewed December 15, 1937
1 Claim. (Cl. 144-104)
The invention relates to a drilling brace press the chuck I8 of this brace carrying the drill I9
and more especially to a combined brace holder will have bearing on a rest bracket 20, it being '
suitably perforated at ZI for the passage of the
and press.
The primary object of the invention is the drill I9 therethrough. The bracket 20 is slid
5 provision of a device of this character, wherein a
drill brace can be conveniently held in working
position with respect to a piece of work to be
drilled and such brace can be fed or pressed to
the work for the proper drilling thereof, the de
10 vice being of novel construction and will assure
the proper pressure upon the brace during the
drilling period for the successful drilling of a
piece of work.
Another object of the invention is the provision
15 of a device of this character, which is simple in
its make-up, thoroughly reliable and effective in
its operation, convenient for the handling of the
brace, assuring the proper feeding of the bit to
the work, strong, durable, and inexpensive to
With these and other objects in View, the in
vention consists in the features of construction,
combination and arrangement of parts as will be
hereinafter more fully described, illustrated in
the accompanying drawing, which discloses the
preferred embodiment of the invention and
pointed out in the claims hereunto appended.
In the accompanying drawing:
Figure 1 is a side elevation partly in section
the device showing the drill brace ñtted
Figure 2 is a sectional View on the line 2-2 of
Figure 1.
Figure 3 is a sectional view on the line 3-3 of
30 of
" Figure 2.
Similar reference characters indicate corre
sponding parts throughout the several views in the
Referring to the drawing in detail, the device
40 comprises a base or bed 5, in this instance flat
and has rising from its heel side thereof a crane
or upright 6 provided with a forwardly directed
upper end 1. This end 'I is formed with a guide
head 8 through which works a vertically disposed
ably fitted on a vertically disposed guide rod 22
fastened to the crane or upright 6 in the bed or
base 5. Beneath the bracket 20 and about the
guide rod 22 is a coiled compression spring 23 so
that after the bracket is moved downwardly
under pressure applied to the brace I6 in the 10
operation thereof, it will be returned to inoper
ative position as said pressure is relieved.
About the ratchet wheel I2 and freely sup
ported on the journal II is a press handle 24
ñtted with a pawl or dog 25 for engaging the 15
ratchet wheel I2. The said pawl or dog 25 has
its stem 26 slidably fitted in the handle 24 and
about this stem is a compression spring 21 which
biases the pawl or dog 25 into engagement with
the ratchet wheel I2 for the locking of the handle
therewith. The spring 21 plays against a linger
or hand operated piece 28 ñtting the outer end
of the stem 26 and projected from the outer end
of the handle 24. The piece 28 is operated to
release the pawl or dog 25 from the ratchet
wheel I2 so that the handle 24 can swing inde
pendently of this wheel and also have the adjust
ment of such handle so that the rack 9 can-be
turned to exert pressure upon the brace I6 down
wardly for the feeding of the bit I9 in a piece of
work operated upon thereby for the boring of
such work, the bracket 20 yielding to the pres
sure applied to the brace IB ‘against the resist
ance of the spring 23.
The brace I6 can be raised and lowered by the
handle 24 through the coaction of the gear wheel
Il] meshing with the rack 9. The base or bed 5
is formed with a clearance 29 for the drill or bit
I9 when boring through the work during drilling
operation to avoid damage to the drill or bit when 40
passing through the work and avoiding its con
tact with the bed or base 5 in the use of the
What is claimed is:
The gear I0 has its journal II which is fixed
A brace holder and press comprising a base, a 45
crane rising from the base and having a forward
ly directed upper end, a guide head on the for
thereto passed through the side walls of said
wardly directed upper end, a vertically disposed
45 toothed rack 9 acted upon by a feed gear I0.
guide and to one side of the guide is a ratchet
gear I2, the same being fixed to the journal I I for
5 O a purpose presently described.
The rack 9 at its lower end has coupled at I3
therewith for free swivel movement a clamping
head I4 for accommodating the terminal handle
knob I5 of a brace I 6, the head I4 being split at
I'I at intervals to permit of the bending of such
head about the handle knob I5 of said brace as is
clearly shown in Figure 1 of the drawing.
The knob I5 when engaged in the clamp I4
60 will suspend the brace I6 from the rack 9 while
toothed rack fitting said head, a feed gear jour
naled in said head and meshing with said toothed 50
rack, a ratchet acting lever arranged with the
head and active upon the feed gear for the turn
ing of the same, a coupling carried by said rack
at its lower end, and a bit brace knob receiving
head swiveled to the rack by said coupling and
having splits at intervals for the bending of the
head about the brace knob for its clamping there
by and vsuspension of said brace from the rack.
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