US1370026A - Pneumatic-tool support - Google Patents

Description

Patented Mar, 1, 1921.

2 SHEETS'SHEET lkw \w t M \w M Q l H & m M m o \N \N mm v 1 w a. O Q Q fli ,MN Q Q fir Q x a 3% Q w \w m UNETEB STATES eerea'r o FicE.

CHARLES A. rnvz, or nUBuQUE, IOWA.

This invention relates to a pneumatic hammer supporting device, an object of which is to provide a supportlng device that will support an air hammer in such.

relation to a ship or other structure as to relieve theoperator of the weight of the hammer. W

Another object of this device is to provide a pneumatic hammer supporting device which rigidly supports the hammer against movementfrom the ship or other structure; but allows universal adjustment in a plane parallel with the outer surface of the ship, thereby permitting the operator to conveniently adjust the hammer to a selected securing device in the ship.

A further object of the invention is to provide a pneumatic hammer supporting device comprising interchangeable components to permit the device to be rigged in such relation to the ship as to allow the device to support the hammer against movement away-from the bottom ofthe ship when riveting at this portion of theistructure. An additional object of this device is to provide a pneumatic hammer supporting device comprising means for controlling the movement of the hammer independent of the supporting frame. I

It is also an object of this invention to provide a pneumatic hammer supporting device of generally improved construction whereby the device will be simple, durable and inexpensive in construction, as well as convenient, practical, serviceable and efli.

cient infit-s use.

Withthe foregoing and other objects in vlew which will'appear asthe description proceeds, theinvention resides in the combination and arrangement, of parts and in the details of construction hereinafter de scribed and claimed, it being understood that changes in the precise. embodiment of th i ti herein disclosed, may be made within the scopeof what is claimed without departing from the spiritof the invention.

This invention has beenillustrated in its PNEUMATIC-TOOL SUPPORT.

Specification of Letters Patent.

Application filed November 28, 1919. Serial No. 341,343.

preferred embodiments in the accompanying.

drawings, wherein I Figure 1 is an end view of the supporting device showing it applied to the side plates of a steel ship structure. 7

Fig. 2 is a front view of'the device.

Patented Mar. 1, 1921.

Fig. 3 is a horizontal sectional view taken I on the line 33 of Fig. 2.

Fig. 4 is a detail view of the hammer holder, the hammer being removed. Fig. shows the device assembled for use in riveting the bottom plates of a ship structure. V

Fig. 6 is an elevation of the adjustable foot 'lever.

Referring to the drawings there are shown the usual steel plates P employed in'ship building, and with which this device co operates. The invention. comprises an an gle plate or bracket 1 having a plurality of apertures 2 formed in one leg thereof for the reception of bolts or other securing devices 3; which rigidly secure the bracket 1 to. the plates P forming the hull of a ship. A tubular hangeror supporting member 4: is secured to the outstanding leg of the bracket 1, and extends downwardly and outwardly and terminates at its lower end into a bearing member 6, which is parallel with the side of the ship and has plurality of apertures T'fOrmedtherein. The hanger or supporting member 4 is held against outward movement with relation to the ship by means of a brace or truss rod .8 that is secured at its upper end to the lower end of the bracket 1, and the opposed 'en'd of this brace rodis secured to the lower portionof the hanger 4, while a strut or standard 9 spaces the intermediate portion of the truss rod 8 from the hanger l, thereby fur?- ther reinforcing the structure.

A supporting frame cotiperates withfthe hanger, and comprises perpendicularly dis posed tubular-members ll and 12 which are united at their inner ends by a coupling 13 and their outer ends are braced by a teetangular framel which is rigidly secured to the tubular members or pipe sections 11 and. V

12. One of the tubular members 11 has a spool 15 rotatably mounted thereon and disposed within the frame 14. "A collar 16 is carried by this tubular -member, which collar supports spaced pulleys or sheaves 17. and

the outer end of this tubular member has 40 cured to the hammer handle by suitable setrunnion' 18 extending therefrom. Detachably secured to the tubular member 11,

which is remote from the trunnion 18, is a tubularextension 19, and a lever 20 'is fulcrumed at the outer end of this extension. An extension rod 21 is slidably mounted Within the tubular extension 19 and has a trunnion 22 formed at the outer end thereof, while the intermediate portion of the rod 21 has a collar 23 rigidly secured thereto, and

c which is operably connected with the lever 20 through the instrumentality of a link 23, and the outer end of this lever 20 cooperates with a stop or locking member 24 carried by the hanger 4. A supporting arm 25 is slidably mounted in the tubular members 12 and coupling 13, and spaced fingers 26 are secured to the arm adjacent its opposed ends.

Spaced brace lines or cables 27 are carried by the fingers 26, and these flexible elements or I cables are trained over the sheaves 17 to thereby provide reinforcing or bracing means for the arm 25 under conditions to be hereinafter set forth. A hammer holder or head 28 is detachably secured to one end of the arm 25 by a pin or other suitable securing device 28, and this head is bifurcated to dering 32 of the member 34 are provided with slots 35 forthe reception of a transversely disposed pin 36 carried by a block or hearing 37 securing devices. The slots 35 permit the hammer to vibrate, but support the hammer in the head 28. In order to lock the collar or ring 32 within the head 28, there are provided latches 38 which are pivoted to the sides of the head 28 and engage the trunnions 31 to hold them in recesses 30, while leaf r the trunnions springs 39 are secured to the head 28 to engage and lock the latches in engagement with 31. To adj ustably support the arm 25 in working relation to the side of the ship, there is provided aitrack member 40 whichjis rigidly secured to the bracket 1 and is; parallel with the side of the ship; while the outer end of this track is supported by a brace rod 41 that extends from the outer end of the track 40 to the upper terminal of the bracket 1.- The arm 25 is supported by a block and tackle arrangement which includes a traveler or carriage 42 mounted for.

movement along the track 40, and block 43 r is carried by the carriage. A similar block 44 is attached to the outer end of the arm.

25, and a pulley 45 is supported at the inner 'ing member 6, and

posed between end of the track 40. One end of a cable or other flexible element 46 is detachably secured to the outer end of the track 40, as shown at 41, and from this point the cable extends downwardly and through the block 44, then upwardly through the block 43, again down through the block 44, and then up through the block 43, around the pulley 45 and downwardly around the spool 15. From this point it extends downwardly and is secured to a weight 46, which: weight serves to balance the entire hammer supporting arm.

The operation of the device as disclosed in Figs. 1, 2, 3 and 4 is as follows:

The bracket 1 is rigidly bolted to the side plates P of the ship. by placing the bolts 3 into the usual rivet holes of these plates, and then the trunnion or point. 18 is placed in a similar hole, thereby pivotally supporting the inner end of the arm supporting structure. Now, the trunnion or point 22 is alined with a selected hole 7 of the bearthe lever 20 is moved outwardly which moves the trunnion 22 into the hole 7, thereby pivotally supporting the outer end of this structure; and the outer'end of the lever 20 is placed'behind the locking member 24, which action locks the extension rod 21 in its extended position; The hammer H is positioned in the andtackle is adjusted, thus providing a device which adjustably supports the hammer H in operable relation with the side of the ship, and allows a relatively great range of movement of the hammer and at the same time relieves the operator of the weight of this hammer. In Fig. 5 the device is shown arranged for use in riveting the plates on the bottom of the usual steel ship structure, in which arrangement the supporting member 4 is removed and a pedestal supporting member is substituted. The tubular'extension 19 is removed and a longer extension'19 is employed, and this tubular extension is placed over a vertically disposed rod or pipe 47 supported by a suitable pedestal or block 48. This rod 47 has, a sleeve 49 slidably mounted thereon, andpins or trunnion 50 extend laterally fromthe sleeve into slots head 28and the block 5 51 formed in the bifurcated end of a lever 52. A. post 53 is secured to the pedestal 48 in spaced relation to the supporting pipe 47, and the lever 52 'is fulerumed to this post, as shown at 54, and a pawl 55, having a handle member 56, is pivoted to the lever 52 and cofiperates with. a rack or locking member 57 carried by the port 53. Surrounding the pipe or support 47 and inter the lower end of ,the extension 19' and the upper terminal of the sleeve 49 is a compressionspring 58 which serves as a cushion between the sleeve and extension. A finger 59 is detachably seof the straps 33, and the inner end of the lever 62 is pivoted to the block 37 carried by the hammer handle, as shown at 64. A. rocking arm or member 65 is 'fulcrumed to the lever 62, as shown at 66, and the remote end of this arm carries a pin 67 which is adapted to engage the usual air valve lever or handle L of the hammer H. The arm 65 is pivotally connected to a link 68 that is operably connected to a bell-crank handle member 69, and a retractile spring 70 is attached to the lever 62 and link 68 to normally hold the pin 67 from engagement with the valve lever L W hen employing this structure the trunnion 18 is alined with one of the rivet holes of the bottom plates of the ship and the outer end of the lever '52 is moved downwardly by the foot of the operator, which causes the point or trunnion 18 to move into the selected rivet hole. Then the handle 56 is grasped to move the pawl into engagement with the rack 57, thereby locking the device rigidly to the ship. Now the arm 25 may be adjusted longitudinally and the flexible cables 27 will move freely over the pulleys 17, and the roller 60 will readily travel along the bottom of the boat, thus servin to brace the arm relative to the boat structure. After the tool or die of air hammer H has been alined with a selected rivet, the hammer may be moved upwardly against the rivet by simply pressing downwardly on the free end of the lever 62, and the hammer operated by merely gripping the handle lever 69, which causes the pin 67 to engage the valve lever L and open the usual air hammer valve.

When the hammer H has been moved a relatively great distance from the supporting frame 14 it is necessary to provide additional supporting means, and to this end a collar 71, having an eye 72 formed thereon, is secured to the arm 25, and a rod 73 is detachably secured thereto. A second rod 74 is slidably secured to the rod 73, and an adjustable collar 75 is secured to the rod 73, which collar engages the upper end of the rod 74;. This arrangement provides an adjustable supporting leg that may be conveniently attached to the arm 25 when desired.

In Fig; 6 an adjustable foot operating device is disclosed which is adapted' to be employecl to support the hammer H when there is suliicient distance between the ground and the bottom of the boat to permit its use. Under this condition the hand lever 62 and adjustable supporting leg is removed and the foot operated device is substituted by simply attaching the rod 76 to the block 37 of the hammer H. The rod 76 is adjustably secured to a rod 77, which, in turn, is pivotally connected to a foot lever 78 that is fulcrumed on a pedestal 79. Thus by simply pressing the foot on the free end of the lever 78 the hammer H may be forced against the selected rivet, and the valve lever L operated inthe usual manner by hand. lVhen the roller 60 encounters a seam or other projection on the plates of the ship then this roller may be moved away from the plates by simply turning the outer end of the finger 59 about its joint 61.

Having thus described my invention what is claimed is 1. A device of the class described including a supporting member, a supporting frame pivotally secured to the supporting member and the structure being operated upon, an arm slidably secured to the supporting frame, an automatic hammer holding-head secured to the arm, and means for securing the said hammer in the said head in operable relation with the said structure.

2. A device of the class described including a supporting member, a supporting frame pivotally secured to the supporting member and the structure being operated upon, means for attaching. and detaching the supporting frame with respect to the supporting member and the said structure, an arm slidably secured to the frame, ahead carried by the arm, means for pivotally securing an automatic hammer to the head, and means for adjusting the said arm with respect to the said structure.

3. A device of the class described including a supporting member, a' supporting frame adapted to be pivotally secured to the supporting member and the structure being operated upon, a lever operably connected with the supporting frame andv adapted to coiiperate with the supporting member for locking the supporting frame in operable relation with the supporting member and the said structure, an arm slidably. secured to the supporting frame, a head carried by the arm, means for pivotally and slidably securing an automatic hammer to the said head in operable relation with the said structure. 7 I

4-. A device of the class described including a supporting member, a supporting frame comprising perpendicularly disposed tubular members united by a central tubular coupling, a rectangular frame adapted to brace the outer terminals of the tubular 7 members, a tubular extension detachably sepivotal relation to the supporting member and the said structure, a sheave carried by the supporting frame, an arm slidably secured t0 the supporting frame, spaced fingers carried by the arm, a flexible cable secured to the fingers and extending over the sheave, a head carried by the arm, and means for operably securing an automatic hammer to the said head.

5. A device of the class described including a supporting member, a supporting frame pivotally secured to the supporting member and the structure being operated upon, an arm slidably secured to the said frame, a head secured to one terminal of the arm, said head being bifurcated to provide spaced ears having alined recesses formed therein, a collar adapted to slidably receive an automatic hammer, alined trunnions extending from the collar and adapted'to be received Within the said recesses to pivotally attach the collar to the said head, latch members pivotally secured to the head and adapted to engage the trunnions to lock the c0l-- lar in operable relation to the head, means for securing the latch members in their.

locked position, opposed straps pivotally secured to the said trunnions, and means secured to the remote ends of the straps for securing the automatic hammer in operable relation to the head.

6. A device of the class described including a supporting member, a supporting frame pivotally secured to the supporting member and the structure being operated upon, an arm adjustably secured to the said frame, a head carried by the arm, a collar pivotally secured to the head and adapted to slidably receive an automatic hammer, a strap pivotal'ly secured to the collar, a lever fulcrumed to the opposed end of the strap and pivotally secured to the said hammer, a rocking member pivotally secured to the lever, a pin carried by the rocking member and adapted to engage the usual valve lever of the automatic hammer, a link pivotally secured to the rocking member, and a handle member tulcrumed to the lever and pivotally connected with the link.

In testimony as my oWn, I have hereto ,aflixed my signature in the presence of two Witnesses CHARLES .A. KUNZ'. v Witnesses I. M. ALEHR, L. PIER.

that I claim the toregoing

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