US1344910A - Attachment to carpenters' and similar hand drilling-braces - Google Patents

Description

P. JLLEVS'UEUR f ATTACHMENT T0 CARPENTERS nn SIMILAR HAND DRILLING BRACES.

APPLICATION mzp' JAN.l0. l916. 1,344,910,

s SHEETS-SHEET 1.

9 2 6 H H o d m w a P P. 1. LE SUEUR.

ATTACHMENT T0 CARPENTERS AND SIMILAR HANQ DRILLING BRACES.

APPLICATION FILED JAN-10.1916.

1,344,910.- Patented June 29,1920.

3 HEETs-SHEET 2.

P. J. LE SUEUR.

ATTACHMENT T0 CARPENTERS AND SIMILAR HAND DRILLING BRACES.

APPLICATION FILED JAN. 10. 1916.

1,344,91 O. v Patented June 29, 1920.

3 SHEETS-SHEET 3v w v v @u'zo.

UNITED STATES PATENT OFFICE.

PHILIP JOSHUA LESUEUR, OF BRIGHTON, ENGLAND.

Specification of Letters Patent. Patented J 29 1920;

Application filed January 10, 1916.- Serial No. 71,371.

To all whom it may concern; A

Be it known that I, PHILIP 'JosHUA Ln SUnUn, a citizen of the United States, and a resident of Brighton, county of Sussex,

England, have invented a new and useful vAttachment to Carpenters and Similar Hand Drilling-Braces, of which the following is a specification.

My invention is applied to the ordinary drilling brace of commerce and by a novel arrangement of partsconverts a brace into a practical tool for drilling iron or other metals, the drill being forced automatically into the metal to be drilled by the rotation of the brace by the hand and arm of the operator in the usual manner when using a brace.

A very valuable feature of this invention enables the operator to drill holes around the top of a boiler or tank, or to drill holes around a hole in a steam boiler (which may result from a boiler explosion) and also drill holes around the edge of a plate suitable to rivet over the hole in the boiler.

An object of the invention is to provide a brace that shall enable a'worlgnan to do the various kinds of work required in motor or other repairing, and that shall be available for the boring of wood as well as the drilling of metal.

A special feature of the invention is'the I facility with which the automatic arrangement for drilling iron may be thrown out of gear and preserved from injury and wear when the operator uses the brace" on work common to the ordinary brace.

Another valuable feature of the invention consists in the faculty withwhich the drills either for wood or iron may be changed, the arrangement of parts being much simpler than in the ordinary brace of commerce, thus effecting a great saving of time and lessening the cost of manufacture.

' Another valuable feature of the invention is the device which automatically forces the drill into the substance to be drilled requir ing no pressure from the operator against the brace. l

The most striking feature of this invention is that a certain automatic movement which formerly went to waste, is now utilized.

- Figure 1 is a perspective View of the invention showing all its main features.

Fig. 2 is a view of the invention as applied to an ordinary brace, showing also the method employed in drillingjcylindrical bodies, and also illustrates the position of the collar for retaining the drill in the drill socket.

Fig. 3 represents a longitudinal section of the spindle portion of the attachment.

F g. f1 represents the drill showing the pro ections or flanges on the shank.

F g. 5 s an end View of the drill shank.

' Fig. 6 1s a perspective View of the flanged non-turnable collar.

Fig. 7 is a perspective View of the crampl1ke, casting with the chain attached.

F g. 8 is an end View of the drill socket.

F 1g. 9 is a longitudinal section of the hand grip of the brace, showing also the flanged collar supporting a special form of bearing pm.

Fig. 10 is a side view of the stop piece for regulating the stroke of the lever.

-F1g. 11 is a perspective view of an auxil- 1ar stop piece. 4

1g. 12 1s a side view of a special form of bearing pin.

Fig. 13 is, a "view of the flanged collar showlng the bearing pin placed out of gear and the ratchet wheel and ratchet.

Fig. 14 is a perspective view of a collar designed to keep the bits in rigid engagement with the drill socket.

Fig. 15 is a partial front View of the collar shown in Fig. 14.

Fig. 16 is an end view of the drill socket showing a projection designed to engage a groove in the drill shank.

Fig. 17 is a longitudinal section of a special form of hand grip for the brace.

Fig. 18 is a view in elevation showing a train of gear wheels for rotating the forcing screw.

Fig. 19 is a perspective view of a drill whose shank is provided with a groove also a flattened portion.

Fig. 20 is a side View of the stop-piece with the auxiliary attachment applied.

Fig. 21 is a perspective view of the adj usting nut designed to engage the outer end of the spindle portion of the attachment.

In the drawings, 2 designates the steel frame of the brace, provided at its inner end with the usual body rest 3.

The outer end of the brace is provided with an attachment 4, in which the most prominent features of the invention are embodied, and though the ratchet device of commerceis used owing to its adaptability for drilling in corners, it is not claimed as part of the invention, for as shown in Fig. 2 the action of the various parts of the attachment are the same as when used with the ratchet device of commerce.

The attachment 4,-has a reduced portion 5, (Fig. 3) which engages the journal hole 6 and passing through the ratchet wheel 7, it is secured thereto by a screw 'A. The 1on gitudinal hole 8 receives the shank of the drill 9, which is rendered non-turnable relative to the attachment 4, by the projections 9 (Fig. 4) which engage the two grooves 8 cut longitudinally in each side of the hole 8. v

The grooves are the preferred design for rendering the drill non-turnable, as by this plan the hole and the grooves may be cast. The drill shank couldbe grooved or flattened, and a corresponding fiat part provided in the drill socket as shown in Fig. 8.

'Both these cases are objectionable from a manufacturing standpoint as the hole could not be bored true relative to the attachment. The attachment 4, is threaded at its outer end, the nut 10, (Fig. 21) engaging the threaded portion. The flanged collar 12, (detail Fig. 6) is in practice placed behind the nut 10, and is rendered non-turnable by a suitable projection 12*, which engages with the groove 14. The reduced portion of the non-turnable collar 12 is designed to receive the collar 16 of the cramp-like casting 17, (Fig. 7) which holds the article to be drilled in direct contact with the point of the drill. casting 17 is provided with a semi-circular bearing 16 which works on the smooth portion of the attachment 4, relieving the flanged collar 12 of considerable strain. Said casting is also provided with a triangular slot B for drilling small round bars or pipes. The said casting may be made in various forms to suit different kinds of work.

The inner portion of the attachment 4 is pierced longitudinally by a hole 18 which connects with the drill shank hole 8. Said hole 18 being threaded, is designed to receive the forcing bolt 20 which normally contacts with the inner end of the shank of the drill at D. Reference to the drawings shows that the drill shank is quite long and is designed to slide longitudinally in the drill socket under the action of the forcing screw. The inner end of the forcing bolt 20 is provided with a large head 22 having ratchet teeth on its outer periphery, also the pivot 23 projecting from the center of the ratchet wheel. The device which automatically forces the drill against the object to be drilled consists of the lever 24 pivotally connected with the forcing screw 20, the

It will be observed that the ratchet spring 26, the plates joining'at thebend E are riveted together and form one plate, making a strong plate and yet occupying little space. The lever extends along the arm of the brace and is operated by the pin or hearing 27 ,which projects from the flanged collar 28 of the hand grip 30.

The utilization of, the automatic motion of the hand gripis as far as. I .amaware,

novel, and while the preferred form for.

rotating the forcing bolt is that shown in Figs. 1 and 2, consisting of the lever and ratchet device; it is obvious that a driving pinion may be mounted on the hand grip in place of'a bearing pin, and a suitable train of wheels connect the hand grip with the forcing bolt, as in Fig. 18, the claims are drawn with a view to cover this method of rotating the forcing bolt.

In using thebrace the operator gripsthehand grip 30 in the usual manner and as he turns the brace to the right, the hand grip 30 turns to the left, carrying with it the bearing pin 27 which impinges upon the end of the lever 24 at F and moves it over an arc varying with the are described by the pin 27. This movement of the lever turns the forcing screw 20, forcing the drill against the object to be drilled.

In order to regulate the length of the stroke a stop piece 32 is provided consisting of stiff steel wire which is secured to the attachment 4 by the ends H (Fig. 10) of the stop piece being pushed into two holes drilled in the projections 33 and secured up against the stop piece at M and main;

tain a correct position relative to its engagement with the bearing pin 27 The stop piece 32 is adjusted correctly for all ordinary sized drills, but when a very small drill is used and it. is desired to shortenthe stroke of the lever the auxiliary stop piece 36 (Fig. 11). is clipped on to the stoppiece at M. The auxiliary stop piece consists. of a sheet of steel turned up with the two ends slotted at N to fit into the side bars of the stop piece 32. The'spring part 'at 0 clips resiliently on to the top bar of the stop piece, thus reducing the stroke'of thelever and consequently the depth of the cut of the drill. Other methods may be adopted but the above is the preferred form.

vAnother form of bearing pin 27 (Fig. 13) which is mounted on the flanged collar 28 of the hand grip 30, is provided with two rough usage.

the pin butting against the portion of the flanged collar 28 at R, which is the correct position when operating the .lever 24. A plain bearing pin screwed into the collar 28 is illustratedin Figs. .1 and 2. I 7

As this invention is designed to be a useful help to the mechanic, the bearing pin'27 is designed to .fold under the flange of the collar'28. The. dotted lines in Fig. 13 show position of pin 27, which action-throws the automatic drilling device out ofgear and the brace can then be used as an ordinary brace.

The method of placing the bits in posi tion is much simpler and quicker than the plan used in the ordinary brace of commerce. The projections 9 which render the bit non-turnable relative to the socket 9 also serve the purpose of holding the bit in the socket when pulling a wood bit out of the hole bored by it. The collar 29 (Fig. 14) which screws on to the attachment 4,

is provided with a hole 3O which is the same size as the shank of the bit. The slots or grooves 30 when turned to register with the grooves 8 allow the bits to be inserted in the socket 9; when the collar 29 is screwed up and the slots 80 are out of register with the said grooves 55, the bit is held firmly in position. V

The parts in this invention are so arranged as to be protected from damage by The lever 24 is protected by the strong arm of the brace with which it runs parallel; but it is evident that should the brace be turned backward, with great force and the bearing pin 27 strike the end of the lever 24:, damage might result. To avoid this I have provided the ratchet wheel 36 (Fig. 13) which is rigidly secured to the 7 steel frame of the brace at S, serving also as one of the collars to retain the hand grip 30 in position. The ratchet 37 pivotally connected to the flanged collar 28 and secured thereto by the screw T is held in re- 7 silient contact with the ratchet wheel by the spring 38. This device prevents the hand grip 30 from being turned backward, the hand'of the operator turning around the hand grip instead.

In operating the device the collar 16 of the cramp-like casting (Fig. 7) is placed on the cylindrical portion of the attachment 4. The non-turnable collar 12 is also placed in position, the collar 16 engaging the reduced portion ofsaid collar. The nutlO (Fig.21) is then screwed up against the non-turnable collar 12. The metal L0 to be drilled is placed between the point of the drill and the bearing B. of the cramp-like casting 17 and the nut 10 screwed up tight, the forcing The operator then turns the brace that a spur 17 projects from the oasting 17. This spur is provided with an adjustable chain which is placed around the object to be drilled, and holds the casting-17 and the object to be drilled, in position, relative to each other. This cramp-like casting is especially useful when a hole has tobe drilled out from the center of the article. The chain ordinarily used always pulls the drill toward the center, breaking it in so doing.

For drilling holes in cylindrical bodies such as pipes, I prefer to employ for bringing such objects in contact with the drill, a U-shaped metal ribbon 44 (Fig. 2). In actual practice, it can easily be slipped between a pi e and a wall much easier than the usual 0 ain; said ribbon provided with several holes V which engage the projecting parts X of the collar 46 enabling the operatior lto meet the requirements of a shorter ril Another form of hand-grip 48is shown in Fig. 17 for use in doing heavy work; this 7 form is simple to manufacture, the pin 49 is designed to slide intothe hand-grip, the

dotted .lines showing its positionwhen out of gear, the spring 50 holding the pin in position.

What I claim is 2- 1. In a drilling brace, in combination, 'a brace frame, an attachment having a grooved drill socket suitably secured to the outer end of the brace frame, a drill having a suitable drill shank for engaging said drill socket, said attachment having a threaded hole extending longitudinally into the, attachment from its inner end and connecting with the drill socket, a feed screw provided with a ratchet wheel engaging said threaded hole, a lever carrying ratchet mechanism suitably engaging said feed screw and the ratchet wheel, and means onthe hand grip carried by the crank of the brace forsengaging said lever and rotating outer end suitably secured to-the outer end 1 of the brace frame, said attachment provided with a groovedldrill socket, a drill provided with a shank having projections and capable of moving longitudinally in the drill socket, a cramp-like casting having 125.

bearings at its innerv end, and a work support at its outer end engaging said attachment, a collar'engaging the attachment and said cramp-like'casting, said collar rendered non-turnable relative tov the attachment, an

adjustable retaining nut, a feed screw provided with a head having ratchet teeth on its outer periphery engaging the threaded hole in the inner end of theattachinent and engaging the inner end ofthe drill,- a lever pivotally attached to the feed screw, and provided with ratchet mechanism for engaging the-ratchet-teeth on the head of said feed screw, a stoppiece projecting fromfthe frame. of the bracefor adjustin'g'the stroke of the lever, aspring for keeping the lever in position, and a bearing pin on the hand grip carried, by the crank'of the brace; for

oscillating the lever and rotating said feed screw. 7

3. In a drilling brace, in combination, a

brace frame, an attachment suitably attached tothe outer end of thebrace frame,

.said attachment carrying a drill and pro vided'witha feed screw operated by an automatic feed motion; for the drill derived from thefrotation of the hand gripjon the" V crank, a'collar provided with lugs engaging the said attachment, a non-tnrnable collar relative to the attachment engaging the col- A Dated the 20th day of December, 1915. v i

PHILIP JOSHUA LE sUEUR;

' WVitnesses:

M. L. STANLEY, W. G.- F. 'DEYVAR.

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