US1066414A - Pneumatic tool. - Google Patents

Description

H. E. LE GENDRE & G. LEIGH.

PNEUMATIC TOOL.

APRLIOATION IILBD D3011, 1911.

Patented July 1, 1913.

WITNESSES: @wrffime/ rww/w nmrrnn STATES PATENT OFFICE.

HENRY E. LE GENDRE, OF CRESSKILL, NEW

"JERSEY, AND GEORGE LEIGH, OF NEW YORK, N. Y., ASSIGNORS T0 E. W. BLISS COMPANY, OF BII'OOKLYN, NEW YORK, A

--CORPORATION OF VIRGINIA.

PNEUMATIC r'ooL.

Original application ifiled November 3, 1910, Serial December 11, 1911.

To all whom it mag concern: Be it known that we, HEN-RY Er Ln ,iiENDRE and GEORGE LrnoH, citizens of the and useful Improvements in Pneumatic lools, of which the following 1s a speclfica- 'tion.

This invention relates to a" closure or locking-means for the ends of the casings of pneumatic tools, and aims'to provide oer:

tain improvements therein.

It further relates to Improvements 111 the general structure of such tools at the inlet end.

Pneumatic tools are ordinarily subjected to a great amount and degree of vibration and it has been difficult to obtain a means for closing the end of the tool casin which will not be loosened under such vi nation. The present invention is designed to overcome the foregoing objection, and provides a closure which may not only be malntained fixed in the casing under vibration, but upon which the force of vibration acts to increase its fixity. The closure also acts as a means for holding securely in place certain parts of the tool at the inlet end.

The present application is a division of our earlier application S. No. 590,493, filed November 3, 1910.

An embodiment of the invention is described in detail in connection with the accompanying drawings, wherein- Figure 1 is a vertical sectional view of the end portion of a pneumatiotool, showing the end-closure in place. Fig. 2 1s a view in elevation of a part of the end 2110- partly in elevation another part of the the part shown in 4 a vertical-secand partly in section of end closure, fittedupon the preceding view. Fig.

- tional view of the valve-box, to show more the construction thereof.

clearl y A indicates a casing In the drawings,

-having .a piston cylinder A therein and Specification of Letters Patent.

Patented July 1, 1913.

No. 590,493. Dlvideitandthis application filed Serial No. 665,164'.'

which may also have a cylindrical chamber A therein in which avalve box or the like C may be contained. The valve box C has a valve-proper c therein and may be closed by a cap 0 fitting within a recess 0 on the n Ber face of the valve-box.

and E indicate respectively, parts of the end-closing means,'D a plug or cap for closing the end of the casing and E a nut 'for locking 'said plug'in'place. The plug D has a base portion cl and a conical or tapermglproject-ion or extension (2, preferably ending in a squared end 11*, by which plug may be engaged by' a wrench. The base portion (Z isnlso preferably provided with threads d on its periphery by which it may engage threadsa' upon the interior of the end of the casing A. .The lower face of the plug-may be recessed, as indicated at and trued so that it may fit tightly against the part which it engages, such as the cap on the upper face of the valve and prevent escape of motive-fluid. The plug thus not only acts as a closure for the end of the casing but also serves to hold the interior parts in place. -Theplug has a passage (l lon itudinally the'rethrough, for admission of air to the tool, and is formed with interior screw-threads by which the end of a supply pipe is connected' Nut E is of cylindrical form and has a tapered bore a therein of approximately the same size as the tapered-extension (Z of the plug D upon which extension th'nutis adapted to fit.

the-

box

gaging the threads a of the casing. -The nut is also preferably split, as at e, and is preferably. provided with squared faces 0 whereby it may be engaged by, a wrench.

The plug D is first inserted in the end of the casing'in contact with the cap on the valve-box, or other part against which it bears. The nut E is then placed over the plug and screwed down upon the plug. As the nut is'screweddown upon the plug it is expanded by the tapered extension thereof and its threads are thus wedged or expanded tightly into engagement with the thread on =the casing. The .plug is thus held seupon said eap..

rarely in position by the nut and the nuterably provided with screw-threads may be asmuch astheforce of vibration will only "COB said cap upon said pzirt' bywvhiclnit is supported and interacting meansfupon said nut is pressed upon said cap.

a ut b gaged by said tapered extension, both said comprising a threaded cap and a threaded firmly pressedby the plug into engagein n p with the'casmg. T he'plug being also .pirc

thus additionally secured in position: The elosure vvillynot be loosened by vibration, in-

and cap for expanding said nut when said nut is pressed upon said cap 2. An end closure for pneumatictools, comprising a cap and an expansible nut, said cap being adapted to rest upon and be firmly supported by a part of a. pneumatic tpol, and said nut'being adapted to press said cap'uponsaid part-byivhich it is suppiorted, said 'cap' having a tapered part adapted to expand said nut when said nut An end closure for pneumatic'tools, eomprising'a cap and a split nut, said cap being adapted to rest upon and be firmly supported by apart of a pneumatic tool, and said nut being adapted to presssaid cap upon said part byzw'hic'h it is supported, said cap having ataperedfpart adapted to expand said jnut 'v'\ hen said nut is pressed 4. An! "end? 010:, i for pneumatic tools, comprising a 'c-ap and a split nut having a tapered opening 'th'erein, said cap being adapted to rest upon and be firmly supyldted by a part ofa pneumatic tool, said eing adapted to press said cap upon said part by which it is supported, and said cap having a-tapered extension adapted to fit said tapered opening in said 'nut and expand said nut when said nut is pressed upon said cap.

5,, In a pneumatic tool, a body, and an end closure comprising a cap having a' 'tapered extension and a split hreaded nutencap and nut engaging 'said body, whereby shocks imparted to said tapered extension drive said nut into binding engagement with said body.

Spr in end. closure for pneumatic tools,

expa'ns ible' nut, said cap being adaptedvto,

.d't W'n lfirnil pneumatic tool, an-dsai tog-maintain, said jcapnagement with saidtool partand-interacting means upgn on a part of a said nut and'cap for expanding said" nut when said nut'is pressed upon said cap.

r. An end closure for pneumatic tools,

comprising a threaded capand a threaded expansible nut, said capfib ng' adapted to be screwed down firmly IIPQli'f-ft part of a pneumatic-tool, and said nut being adapted to maintain said cap in "engagement with being adapted,

said tool pant-said cap having atapered partadapte'd'to expand said'nut when said nut is pressed upon said cap.

8; An end closure for pneumatic' tools,

comprising athreaded'fianged cap, and a threaded expansible nut, said cap being adapted to be screwed down firmly upon a part of a pneumatic tool,- and said nut being adapted to maintain said cap in engagement with said tool part, said cap having a tapered part adapted to expand saidnut when said nut is pressed upon said cap. 7

9. In a pneumatic tool, body hav ing' an interiorly threaded opening in its end, art-endclosure comprising a'cap, adapted to close the end of said bodv, having a screw-threaded flanged portion and, a smooth tapered portion, the taper being toward the upper portion of said cap, and a split externally threaded nut having a smooth correspondingly tapered opening therethrough fitting over said tapered portion of said cap, and adapted to be forced into binding engagement- With the threads on a pneumatic tool body b v the interengagement of "its tapered opening with the tapered portion of said cap.

10. In a pneumatic tool, a body having an int'eriorlythreaded opening in its end, an

end closure comprising a cap, adapted to close the end of'saidbod v having a screwthrcaded portion and a tapered portion, and a split threaded nut having a tapered opening tlYeret-hrough fitting over said tapered portion of saidcap, and adapted to beforced into binding engagement with the threads on a pneumatic tool body by the interengagement of its tapered opening with the tapered portion of said '31};-

11; In a' pneumatic tool,-the combination of a casing having a chamber therein, a valve mechanism contained trom'vthe oasing,fa valve-proper; movable Within said boxing, and a cap, anda closure adapted to engage the end of said cas ing and retain said valve place Within the casing.

12. In. a pneumatic tool, the combination .of-a casing having a chambertherein, a Valve mechanism contained within said mechanism in Within. said chamber comprising a boxing separable chamber, a closure having a tapered shank and an inlet theretln'ough adapted to fit within the, casing above said valve, mechanism, and an expansible nutadapted to fit bupon said tapered shank for locking said closure in plaice.

I In Witness whereof, we have hereunto signed our names in the. presence of two suhserilnng \YllllOfiSOh'.

HENRY E. TJE (lrENDRE. GEORGE ljElCll. "itntsses VVALTER TIIUMA, J osnru B. MQCANN.

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