US1150592A - Pressure-fed tool. - Google Patents

Description

G. H. GILIVIAN.

PRESSURE FED TOOL. APPLICATloN FILED' MAY15, 1909.

Patented Aug. 17, 1915.

@MM ffm/mma y LA7 "croacia H. entramos LA'HEMONTQNEW HAMPSHIRE, ASSIGNOHBY Mnsnn AssiomyiirnlirTs; To SULLIVAN lMAGHINERY COi/LPANY,4 or BOSTON, MASSACHUSETTS, A

l-I. GILMAN,

- citizen ofthe United States, residing at LState of New Hampshire, have invented an Improvement Yin Pressure-Fed Tools, of whichthe. following ldescrip'tion, 1n connectionhwith thegaccompanyin'g drawings, 1s a specification, like .lettersfonlthe drawings `repijescnting like parts. y l

V,rl `his invention relates to. pressureactul ated tools, v. being more particularly con- .cerned with thegprovsion of improved feedingd'eyices for such tools. ThejnyentionLwill behest `understood by l referenceto the following .description when passy `bmkenj my,

taken in connection. with ,the accompanying one: speciic embodiment illustration. of`

tisillllrfPointeflut inthe appended Claims- In the drawi`ngsz-gligure1 shows inplan, @pressure fed yhammer drill embodying oi forml of my invention; Fig-2 is a longitudinahj sectional elevation, on anenlaliged scale,-l showing. the controlling valve forthe feedsand the tool and the passages lea-dingtherefrom; Fig. 3 is a secapneiimaticto tionalelevation ont'he line .3-3 in` Fig. 2 lookingfin the directionvof the arrow; Fig. 45 is a sectionalrelevation lon the llile in `Fig'. 2looking -in thedirection of the arrow; Aand Fig. 5l is an end viewA of the valve vsleeve with. the handle removed.. "'Referring tot'he' drawings'andlt the embodiment of my yinvention there,` disclosed forA illiistratii'e p urposesJ have therel shown ol, herein `of Vthehamnr'er drill type. having the`- cylinder 21,' so connected to suitable pressure-actuatedA ceding appara'v tusthat the pressureI fluidfsupplied thereto only reciprof mmerlrpiston 3 catiyeiy to 1 more the againstQthe shankfofthe v y 4, but. yalso actsl initially'to A"advance the. tool toward'. the 'work'anclv 'hold' the drill forcibly pressed a gaist'l the, I' Same herein l have provided "a ,feeding-cylinder; 5

adapted to coperatie with a suitable'feeding' pistonv 6 contained therein. y, l'Either the r pistter bit or drill while the tool is V PRESSURE-FED y TooL.

Patented aug. i7, 1ere..

. appiicationaieanayis,1909.. seria1No.496,256.

ton or cylinder as 4desired may be connected to 'the tool, the remaining part serving to support they apparatus elther by abutting `against a wall or other support (as in Fig.

1 or by direct attachment to some Xed object. In the present instance the cylinder 5 is secured to the tool to move therewith on ,the piston, the latter having the piston rod 7 which projects through the plug 8 fixed in the rear end of the cylinder and provided with a foot or pointed end adapted to Secure a rm hold in the rock.

rIn the present form of japparatus the pressure Huid for actuating both the feed and the tool is controlled by means of a throttle valve 9, such valve being mounted in a sleeve or casing 10 apart from and eX- terior to the connecting piece or head block l1, which latter is interposed between and rigidly secured to the feed cylinder 5 and the tool cylinder 1.

The connecting piece or head block v11 is brought into firm, Irigid connection with the feed ycylinder' and tool by means of tie bolts 12 provided with suitable nuts, which bolts serve to draw together the clamping collars 13 and 14. The collars are provided with .interiorly tapered seats engaging the flared or tapered walls 15 and 16, respectively, formed on the tool cylinder 1 and the feed 'cylinder 5. The forward end of the feed cylinder 5 by this means is drawn up rigidly over a reduced projecting portion 17J on the. connecting piece, lWhile the rear end ofthe hammer drill is drawn snugly into a shell 18 formed at the opposite end of the connecting piece.

he forward collar 13 is provided with a motive iiuid for the tool, the latter is held Seatedwithin the sleeve 10 by the threaded tapered Vplug y20, which latter'has a central fluid admission passage 21 and is connected' with the feed pipe 2 by means of the nipple 22, a hose line throttle valve 23 of ordinary construction being preferably employedin the pipe 2 between the source of supply andthe apparatus. At its opposite formed in the outer face of the sleeve 10 vand receiving a vpin 27 carried by the inner face of the handle. Toposition the valve in the various positions 'to which it will be customarily turned while, at the same time,

permitting graduated movement thereof, suitable means are employed, such as the spring'catch '28 carried by the inner face of the handle and adapted to engage any one of a series of'depressions29 formed at suitable intervals in the face of the sleeve, Within the sleeve there is also provided an annular lubricating chamber 30, the details of which, however, 'formingnoi part of the present invention, are not herein shown.

From the'admission aperture 2l pressure Huid enters a chamber 31 med in the cupshaped end of the thrott e Valve 9, the latter being provided with a pair of radial ports 32 and .33 adapted to control the pressure lluidfor the feed cylinder and the tool, respectively. When the valve is turned these parts are brought into or out of registration with passages 34 and 35, respectively, which are formed lengthwi y,fthe laterally extending stem piece 36, the llatter attached to or formed integrally with fthe sleeve 10. The. connecting piece or head block is suitably! formed to receive the stem piece 36, the latter being secured in the head block by fits tapered threaded end 38 and the nut lock 39.

i' When the valve 9 is turned to bring the radial port 32 into registration withzthe passage "34, pressure fluid is admitted -through the-said passage to the feed passage 40, which leads throughthe-head block to the feed cylinder,` and the latter -is thereby forced' forwardly or outwardly on the piston'. Likewise, when the valve ispositioned to bring the radial port 33 into registration with the passage 35, pressure fluid is ad mitted through the toolv admission passage 41 to the constant pressure chamber. 42 of lthe hammer? drill, causingactuation f the same. The particular construction of the hammer drilland its controlling valve is of no essential "importance, and the details thereof are not shown, it'being understood that any suitable, form of tool fn'ay be em- `ployed, such, for example, as that shown in my prior Patent No. 902,288.

To place the feed cylinder in communication with the atmosphere, when desired, suitable means are provided, such as a duct or passage 43 (see Fig. 4) extending laterally through the walls of the sleeve and adapted to be laced in communication with the feed 55 cyln er passage 34 in a certain position of the valve by means of a groove or pocket 44 on the side of the valve, such groove being shown in Fig. 4. In this osition of the valve, which may be regarde as its central or inoperative position, the port 33 is shut olf from the tool admission passage, and the feeding cylinder being opened to the atmosphere, the apparatus 1s in its contracted state with the tool' out of operation. The 75 port 32 is of greateri angular extent than the port 33as will be clear from Figs. 3 and 4, so that, when the valve is moved farther to the left (as viewed in Figs. 3 Iand 4), or

in the direction of the arrow, the feed cylinsu der port will be slightly opened inadvancef of the tool admission port. This is 4the second position ofi the valve, and in this position the tool may be'advanced slowly toward the work to position the drill by t initial fessure liuid admitted to the clyl'linder. t the same time, the atmos eric passage 43 is cut oil' from the feed cy inder. With the tool thus positioned it is then usual to start the hammer ently in operation to spot the hole' before ull pressure is turned on to the tool. From the position described the throttle Pmay be turned either to the'fullfor purposes of repair or for other reasons,.- but relieves the va ve of much. of the vibrationftransmitted to those arts of the head block which are in direct lne with the tool. Moreover, bein arranged, as it is in the form illustrate parallel although out 4of line with the axis of the tool, such vibration as is imparted thereto has little effect in wearing thel seating surface of the valve. As shown it is virtually a part of the hose line or constitutesan extension thereof.

While-I have herein shown and described for the purpose of illustration, one concrete form or embodiment of my invention, it is to be understood that the same is not limited to the details of construction, or relative arrangement of parts, or tothe application l herein made of the various features thereof, but that the same may be modified within wide limits without departing from the spirit of my invention.

Having thus described my invention, what I claim is: Y

..Lln a 'tool feeding apparatus, the comb1nat1on with a pressure-actuated tool of a pressure actuated feeding device therefor e slight 35 I block,

' a connecting member between the comprising a fixed and amovable member and a single`throttle valve diiferenl tially controlling said passages, said throttle valve being located outside the connecting member and in the hose line connection.

2. In a tool feeding apparatus, the combination with a pressure actuated tool of a pressure actuated feeding device therefor comprising a coperating feeding cylinder and piston, one fixed and the other movable,-

a headblock uniting the tool and feeding device, said movable feed member, headblock-and tool constituting a movable unit, and a single throttle valve for the tool and feeding device located upon said movable unit but exterior to the headblock and having its axis yparalle with the axis of the tool.

i 3. In a tool-feeding apparatus, the combination with a pressure-actuated tool, of a pressure-actuated feeding device therefor, a headblock uniting the feeding device and tool, a sleeve member exterior to the heada stem for the sleeve member extending into the headblock and provided with passages leading from the sleeve member to l blnation with a pressure-actuated vnation with a pressure-actuated the feeding device and tool, and a throttle valve in said sleeve member adapted in one position to admit pressure fluid to the feeding device, and in another position to admit pressure fluid both to the feeding device and to the tool.

4. In a tool feeding apparatus, the comtool of a pressure-actuated feeding de'vice therefor comprising a fixed and a movable member, a connecting member between the feeding device and tool, said fixed member, connecting member and tool constituting a movable unit, a valve exterior to said connecting member but connected to and movable with said movable unit, a memberl connecting the yvalve and the connecting member and provided with two passages leading through the connecting member to the tool and feeding device, respectively, said passages being controlled by said valve to admit pressure fluid tothe feeding device in one position and in another both to the feeding device and to the tool. t

5. In a tool-feeding apparatus, the combitool of a feeding piston and a feeding cylinder therefor, one fixed and the other movable, a connecting member between the tool and the movable feed member, said connecting member being provided with passages leading in t mg device and opposite directions to control independentlyV the feed and the tool, a removable stem projecting from the connectingmember4 and provided with passages connected with. said passages in the connecting member, a casing exterior tothe connecting member to which the stem is connected', and aytlve in said casing controlling. said passages.y

6. In a tool feeding apparatus, the combination with pressure-actuated feeding device therefor comprising a coperating feeding cylinder and piston one fixed a headblock uniting -the tool and feeding devices and provided with passages lead;

ing in opposite directions, respectively, toY

the tool and feeding device, said movable feed member, headblock and tool constituting a movable unit, and a single throttle valve for the tool and feeding device and controlling the passage of pressure fluid through said oppositely leading passages, said valve being locatedupon. said headblock but exterior thereto, said valve being adapted in one position to admit Huid pressure to the passage leading to the feeding device and in another position to admit fluid both to the passage'leading to the feedto the passage leading to the tool.

7. In a tool feeding apparatus the combination with a pressure-actuated tool of a pressure-actuated feeding device'therefor comprising a fixed and a movable member, a connecting member between the tool and the movable member having passages leading in opposite directio to the tool and the feeding device resptively, said movablelmember, connecting ,member and tool constituting a movable unit, a hose line, a hose line connection attached to said connecting member and a single throttle valve controlling said passages, said throttle valve being located outside the connecting member and in the hose line connection, said valve in one position being adapted to admit pressure fluid to the passage leading to another position to admit pressure fluid both to the passage lea-ding to the feeding device and to the opposite passage leading to the too 8. In a tool feeding apparatus, the combination with a pressure-actuated tool of a pressureactuated feeding device therefor comprising a coperating feeding cylinder and piston, one fixed and the other movable, a headbloclr uniting the tool `and feeding device, said movable feed member, headblock and tool constituting a movable unit, and a single throttle valve forthe tool and feeding device located upon said movable unit but exterior to the headblock and having its axis parallel with the axis of the a pressure-actuated tool of a and the other movable,

the feeding device and in tool, said headblock having passages lea-'1.- name to this specification; in the presence of ing in opposite directions to the tool and two subscribing Witnesses. feeding device and said throttle valve being GEORGE H. GILMAN.

adapted to independently control the pres- Witnesses: sure Huid through saidv assages. J. A. BRUCE,

In testimony whereo I have signed my A. E. DonsEY.

copies of this instelt may be obtained for ve cents each,J byr addressingl the Commissioner of Patents.

` Washington, D. 0."

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