US1667271A - Handle attachment for drills - Google Patents

Description

April 24, 1928.

' S. SEAVER HANDLE ATTACHMENT FOR DRILLS Filed May 16, 1925 2 Sheets-Sheet 1 INVENTOR h HHHHHHH "DUI 10 Ill 4 I SAMUEL SEA um BY/ ATTORNEY "am .6 MW

Hlluum Patented 24;

f UNITED STATES PATENT 1 oF 1c f t SAMUEL 'SEAVER, joE EAI LEYBU Y. ONTARIO, CANADA, Assienon To onrchao rnEUmArIcrooEcoMrAnv, or NEW roan, n.

JERSEY. g Y

Y., a CORPORATION or NEW HANDLE ATTACHMENT on jnnILLs.

Application filed May 16, 1925. Serial'No. 30,661.

.Thisinvention' relatesto drills of the-per- 'cussive type used in mining, quarrying and similardevelopment work and-more parv ti cularly to a handle attachment arranged toadapt a cradle mounted drill for use as a manually supported tool. The invention is in the nature of an improvementflupon the demountable handle device disclosed and claimed in the copending application of Forrest H. Blanding SerialNo. 725,315

filed July 10, 19,24. 1

Among the objects of .theinvention are to avoid relative angular movement of handle and drill by providing a more rigid connection between the same, to so arrange the connection that it will not interfere with the quick mounting and demounting of the attachment norwith the action of resilient supports for the handle proper, and in general toimprove prior structurein the interests of more ellicientnnd satisfactory service, .In order to illustrate the invention one concrete embodiment thereof is shown in the accompanying drawings, in which: I Fig. 1 is'a side elevational view ofa percussive drill ofthe cradle or shell mounted type having the present invention applied thereto; 6 Y, j

Fig. 2 is a right end elevational view of the. part shown in Fig. 1; v

r Fig. 3 is a fragmentary sectional view on the line 33 'of Fig. 2;

F ig. 4 is a bottom plan view of the parts shown in Fig. 1; and V p Fig. 5 is a fragmentary sectional View through the drill on the line 55 of Figs.

1 and 4 showing the yokeot the handle at tachment in side elevation. I

The invention is shown as applied to a percussive drill A of the pressure fluid type having parts secured to or integral with the drill cylinder forcooperation with a shell mounting (not shown), such as the projcctions or wings a and the feed nut a. The detachable handle device adapting the drill to be manually supported and operated consists of a member or'block 6 constructed and arranged to cooperate with the cradle or shell engaging portions of .the drill, namely grooves or recesses 7 receiving the latter. Block 6 has an end plate 8 tormingan abutment for the feed nut a and a perforation 8 in line with the bore of the feed nut for ment in the above described the wings a, by the provision of the axial.

the insertion of a clamping bolt any which the block 6 is rigidly secured to the nut-and consequently to the drill as indicated? Aligned pairs of perforated ears 10 on block 6 slidinglyreceive rods 11 which are parallel} with each other and with the axis of the" drill. Rods 11 havebent'ends 11 carrying a handle 12 arranged to dispose the latter in line with the axis of the drill and transverse thereto. Coiled springs 13 encircle the rods on opposite sides of'block 6 and yieldingly resist movement of the handle 12 relativeto block 6 in both directions. The

inner ends of springs 18 engage as abutments the outer faces of cars 10, and the outer ends otthe springs engage suitable opposed abutments on the rods, as collars 14 adjacent the handle ends thereof and nuts 14 at the rod ends remote from the handle.

The handle device as heretofore described is substantially identical with that disclosed in the copending Blanding application No. 725,315 mentioned above. 'Inpractice it was found that rods of the'above described device had a tendency to angular movement relative to block 6 with the latter asa pivot thus subjecting parts of the attachment to unduestrain and hampering to a certain extent the directing of the tool. The improve handle attachment and constituting the present invention was developed to overcome the above tendency. The invention consists in suitable structure for maintaining the rods 11 in substantially rigid parallelism with the axis of the drill. The preferred means. for this purpose, best shown in Figs. 1, land 5, comprise a member 15 carried by the handle structure. 11, 12 and movable therewith .but maintaining a fixed rectilinear movement of the same in parallelism with the axis of the drill. To.- this end member 15 takes the form of a yoke having perforated. ears15. through which rodsll pass and longitudinal grooves or recesses 15 receiving the wings a of the drill (Fig. 5). By preference ears 15 are disposed on rods 11 intermediate the lower springs 13 and the stop nuts 14 whereby the springs hold theears in engagement with the nuts and yoke member 15 is thereby maintained in spaced relation to block 6. Yoke 15 is bowed outwardly as clearly indicated in Fig- 5 to permit the same to pass over the downwardly project ing nut a of the drill when the attachment is being assembled upon the drill. The process of assembling the handle attachment herein described upon the drill consists in aligning the grooves 15 of yoke 15 and grooves T of block 6 with the wings a and sliding these parts longitudinally of the.

drill until abutment plate 8 of block 6 engages feed nut a. The clamping bolt 9 is then inserted to rigidly secure block; 6 in place and the drill is ready to be operated as a manually supported tool.

While what is now considered to be the preferred form of the invention has been herein shown and described it is to be understood that the invention is not limited to the specific details thereof but covers all changes, modifications, and adaptations within the scope of the appended claims.

I claim as my invention:

1. The combination with a drill of the cradle or shell mounted type of a handle dcvice for adapting the drill to manual operation comprising a block secured to the feed nut; of the drill, a rod slidably mounted upon said block and carrying a handle at one end, resilient means on said rod on opposite sides of said block yieldingly to limit the movement of said rod, and means on said rod engaging the cradle or shell engaging portions of the drill for preventing angular movement of said rod relative to said block, certain of said resilient means being an ranged yieldingly to maintain said last named means in spaced relation with said block.

2. The combination with a percussive drill of a handle'device for adapting the drill to manual operation comprising a block secured to the drill, rods slidably mounted on said block and extending therebeyond in opposite directions, a handle secured to said rods at one end thereof, coil springs on. said rods on opposite sides oi said block yieldingly to cushion the movement of the handle relative to the drill, and a yoke connecting the ends of the rods remote from said handle and slidably engaging said drill, certain of said springs maintaining said yoke in spaced relation with said block.

3. The combination with a drill of the cradle or shell mounted type having wing portions of a handle device for adapting the drill to manual operation comprising a block and ayoke having recesses slidaby receiving said wing portions of the drill, means rigidly securing said block to said drill, perfor-ated ears on'said block, spaced rods parallel with each other and with the axis of the drill slidable in the perforations of said ears, resilient means limiting the sliding movement of said rods, said yoke being mounted on said rods adjacent one end thereof, and a handle secured to the opposite ends of said rods.

a. The combination with a drill of the cradle or shell mounted type havin wing portions and a feed nut, of a hand e device for adapting the drill to manual operation comprising a block and a yoke having re- .cesses slidably receiving said wing portions of the drill, means rigidly clamping said block to feed nut, aligned perforated ears on said block and on said yoke, rods 'slidably supported in the perforations of said ears, coil springs encircling said rods on opposite sides of saidblock, said yoke being mounted upon said rods at one end and engaged by certain of said springs to maintain saidblock and yoke in spacedae lation, and a grip handle secured to the op posite ends oi saidrods.

5. A handle attachment for percussive drills of the cradle or shell mounted type comprising spaced guide membes for engaging the cradle or shellengaging parts of the drill, means for rigidly securing one oi" said members in place, a handle resiliently mounted on said lastnamed member and carrying the other said member and springs interposed between said members to main tain them in spaced relation.

6. A handle attachment for percussive drills of. the cradle or shell mounted type comprising a block for slidably fitting the cradle or shell engaging portionsof the drill, means for rigidly securing said block to the feed nut of the drill, means resiliently mounted on said block and carrying a handle, and a yoke carried by said means for slidably fitting the cradle or shell engaging portions of the drill, said yoke being outwardly bowed to enable it to. passover the feed nut of the drill in assembling the handle attachment on the drill.

7. The combination with a percussive tool of the cradle or shell mounted typeof a handle detachably secured thereto, said handle having longitudinally spaced guide, members engaging the cradle or shell engaging portion of the tool for maintaining the handle against lateral or angular movement relative to the drill, and resilient spacing means between said members permitting movement of one'relative to the other. v

8'.- The combination With a percussive tool of the cradle or shell mounted type of a resilient handle device detachably secured thereto, said handle having longitudinally spaced guide members engaging the cradle or shell engaging portions of the tool for maintaining the handle against lateral or angular movement relative to the drill, and resilient spacing means between said members permitting movement-of one relative to the other, said means forming at least a portion of the resilient support for the, handle.

9. The combination with a percussive tool of the cradle or shell mounted type of a handle detachably secured thereto, said handle having longitudinally spaced guide members engaging the cradle or shellengaging por tion of the tool for maintaining the handle against lateral or angular movement relative to the drill, one of said members beingsecured to said tool and the other to said handle, and resilient spacing means between said members for cushioning the movement of the handle relative to the which is secured to said tool.

10. The combination with a percussive tool of the cradle or shell mounted type of a handle detachably secured to said tool, said handle having a guide member clamped to said tool and a second guide member slidably engaging the cradle or shell enga ing guide member portions of said tool for maintaining the an dle against lateral movement relative to said tool, and resilient means maintaining said members in spaced relation and providing a cushion for said, handle.

11 The combination with a percussive drill of the cradle or shell mounted type having a feed nut of a handle device therefor comprising a member secured to the feed nut of saiddrill, a handle mounted for limited sliding movement on said member,"

means -mov'able with said handle; and slidably engaging the cradleor shell 'engagin portions of said drill for maint-ainin sai handle against lateral movement relative to said dril and a spring interposed between said member and said means for cushioning the relative movement of the same.

Signed by me at North Bay, Ontario, Canada, this 9 day of May, 1925.

SAMUEL SEAVER.

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