US2415811A - Semiautomatic riveting device - Google Patents

Description

Feb. 18, 1947. J. F. come:

SEM-AUTOMATIC RIVETING DEVICE Filed July's. 1944 3 ASheets-Shea?. l

Feb; 18, 1947. J F, OTE 2,415,811

SEMI-AUTOMATIC RIVETINGv DEVICE Filed 'July 3, 1944 3 Sheets-Sheet 2 Feb. 18, 1947. J.F.OTE 2,415,811

SEMI-AUTOMATIC R IIIVEI'ING DEVICE Filed July s, i944 s sheets-sheet 3 448 75 Z" 73 73 l o a0 2f-ZI@ 7.

as l sa Patented Feb. 18, 1947 UNITED STATES PA'raNr orme 5 Claims.

(Granted under the act ,of March 3, 1883, as

amended April 30,

This invention relates to a riveting device and has for an object to provide an improved riveting device preferably operated by a pneumatic hammer for applying hammer blows to the end of a rivet or to the ends of pair oi rivets.

A further object of this invention is to provide a riveting device operable by a reciprocable end of a pneumatic or motor driven hammer.

A further object of this invention is to provide a riveting device having a manually operable means for simultaneously controlling the operation of the hammer and for rotating the rivet head and a second manually controllable clamp for holding the rivet to be headed.

Still further object of this invention is to provide a riveting device for heading a pair of rivet members and for simultaneously rotating a pair of rivet headers by a single manually controllable lever which lever is also connected to simultaneously control the operation of the hammer mechanism.

With the foregoing and other objects in view..

set forth, disclosed, and claimed in the accompanying drawings, wherein Fig. 1 is a side elevational view of the riveting device of this invention.

Fig. 2 is a front detailed view of the lower end of the riveting device.

Fig. 3 is a rear elevational view, partly in sec` tion.

Fig. 4 is a view on line 4 4 of the Fig. 3.

Fig. 5 is a view on line 5-5 of Fig. 1.

Fig. 6 is a view similar to Fig. l but partly in section.

Fig. 7 is a detailed view of a pneumatic hammer throttle valve control lever, and

Fig, 8 is a sectional view on line :8 8 of Fig. 6.

There is shown at Ill the riveting device of this invention. This riveting device as shown is particularly intended for heading a pair of rivets simultaneously but is obviously equally operable for heading single rivet. This riveting device I includes a foundation member II adapted to be secured by suitable bolts or other fastening members I2 to a floor or support IS.

Upstanding from the foundation II is a pair of spaced bosses hi and I5. Extending upwardly through the front boss I4 through a suitable vertical shaftway I6 therein is a shaft II to which is eccentrically secured a cylindrical head I8. Mounted on a splined trackway 2D located on the top oi boss I is a clamping member 2| provided with a shelf 22 on which the cylindrical head I8 1928; 37o o. e. 757) rests, the shaft I'I extending upwardly through an elongated slot 23 in the clamp 2l. A face plate 24 secured to the front of the clamp 2I extends above the shelf 22, the face plate 24 being 5 spaced from the wall 25 at the rear end of the shelf 22 a distance just equal to the diameter of the cylindrical head I8.

Mounted on the upper end of the shaft Il and spaced a distance from the cylindrical head I8 is a knob 29 from which extends a control rod 26. The shaft I'I is secured in position by means of a nut 2l on its bottom end located in a suitable recess 28 in the bottom of the foundation II. A xed clamping member 3i! is secured by studs 3| to the rear boss I5, and is further secured thereto by means of the bolts 32 extending through a forwardly extending base plate 33 supported on a spacing block 34.

Threaded into the opposite sides of the base plate 33 are a pair of vertical rods 35 whose upper ends are threaded as 35 to receive pairs of nuts 3'1 for supporting an upper base plate 38 having a central aperture through which extends the barrel 45 of the pneumatic hammer lil. This 25 pneumatic hammer 4I is of a conventional construction and is provided with the usual pressure supply pipe 42 and the usual throttle valve 43 which when depressed causes the hammer` head 44 to reciprocate rapidly into and out of the barrel lli). The barrel 4i) is normally held against movement in the upper base plate 38 by means of a pair of set screws 45 extending through the edges of the upper base plate as shown in Fig. 4. Mounted on the hammer head 44 is the hammer holder 46 which is provided with vertical perforations 4l so that it may slide freely up and down on the supporting rods 35.

Threaded through the lower base plate 33 are a pair of rivet header bushings 418 whose upper ends are formed into cup spring retainers 5c for receiving coiled springs 5I about the rivet headers 52, the rivet headers 52 being provided at their bottom ends with rivet header tools 53. lThe rivet headers 52 are threaded at their upper ends 5-'5 for receiving spring basing washers 55 over which are mounted gears 55 secured in position by nuts 5'! and lock washers 58. The gears `5t are spaced apart a distance from each other. Both gears 55, however, are in mesh with a centrol gear Bil of about twice the thickness of the gears 56.

This common gear 5i] is adjustably journaled as at 6I on an angle support 62 adjustably secured by the studs B3 to the front edge of the lower base plate 33. It will be observed in Fig. 6

that the position of the gear B is adjustable by the means of its journal El extending through an elongated slot 64 in the angle support 62 and that similar elongated slots 65 are provided for the securing studs 63. Secured to the gear 6B by means oi a stud B6 is a hinge plate 61 on which is horizontally pivoted as at '10 a hand feed control lever 1|. It Will be noted that the end of the hinge plate E8 is recessed to extend about the upper end of journal 6 l Extending through the hand feed control wheel 'H is a exible member such as a chandelier chain 'l2 Whose other end is held in the bifurcated end 13 of a lever 'lli hinged at 'l5 to a hinged plate 16 mounted on the air hammer handle 11 by means oi a nut 78. Secured to the bottom of the lever l@ is a foot S8 in such position as to abut against the top of the throttle barrel 43, and move it to the position it' as shown in Fig. 6 when the lever 'l is depressed.

In operation, the riveting device of this invention provides means for riveting heads on a pair of studs, one or which is visible at `8i in Fig. 6, for securing the studs 8l through a plate 82.

The studs Si are held in appropriate position between the fixed clamping member Sil and the movable member 2i by rotating the hand lever 26 so as to cause the eccentrically mounted head i8 to appropriately position the movable clamping member 2i. r`Ehe clamping members 2i and 3S may be vertically recessed as at '53 to insure the proper positioning of the studs 8l. After the studs Bi are thus clamped by rotation of the lever 25, the plate 82 is placed thereover while hand feed lever il is in the position shown in Fig. 1.

The hand feed lever ii is then depressed to the position shown in Fig. 5 causing the chain 'I2 through lever ld and foot 8G to depress throttle barrel i3 and cause the hammer to operate. This causes a reciprocation of the hammer holder d5 and thus causes the rivet headers 52 to move their rivet header tool ends 53 in a riveting operation on the top ends of the studs Si. While holding the hand feed lever 'li depressed, it is simultaneously moved to and fro in a clockwise and counterclockwise motion. Due to the thickness of the gear 60, the gears 56 stay in constant mesh while reciprocating up and down and thus transmit the clockwise and countcrclcckwise motion of the hand feed lever 'H lto the rivet headers 52, as a result oi which, a suitable rivet head is formed on the upper ends of the studs si securingly iastening them to the plate 82.

The style of rivet headers 52 lhereinshovvn provide iiat rivet heads 83 on the upper ends of the studs El, but any suitable style of rivet headers may be substituted if other types of rivet heads are desired.

After the riveting oper-ation is completed, Athe hand feed lever il is raised a slight amount permitting the throttle valve i3 to move to the off position and the handle 25 is rotated in the opposite direction to retract the clamping member 2l and release the studs 8i which are now riveted to the plate 82 and permit a new pair oi studs and plate to replace them for a similar operation.

Other modifications and changes in the number and arrangement of the parts may be made by those skilled in the art without departing from the nature oi this invention, within the scope of what is hereinafter claimed.

The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes Without the payment of any royalties thereon or therefor.

What is claimed is:

1. A riveting device for riveting studs to a member to be secured thereto, said device comprising means for temporarily clamping the stud, rivet header means, means for reciprocatably mounting said rivet header means in rivet heading position over the clamped studs, manually operative means for rotating said rivet header means to and fro, means for mounting a reciprocating hammer for reciprocating said header means, the reciprocating hammer having a control'means, and means for connecting the hammer control means to said rivet header manually operative means or'cornmon control of both said means, said stud clamping means comprising a base, a fixed clamping member on said base, a movable clamping member, a splined trackway on said base on which said movable clamping member is Yslidesbly mounted, a shaitway formed in said base, said movable clamping member having'an `elongated slot over said shaitway, a shaft mounted through said shaitway and said elongated slot, a cylindrical head eccentrically mounted on said shaft, upstanding walls on said movable clamping member between which said eccentric head is located, and a lever secured to said shaft for rotating said eccentrically mounted head to thereby move said movable clamping member to and from clamping position.

2. A riveting device for riveting studs to a member to be secured thereto, said device cornprising means for temporarily clamping the stud, rivet header means, means for reciprocatably mounting said rivet header means in rivet heading position over the clamped stud, manually operative means for rotating said rivet header means to and fro, means for mounting a reciprocating hammer for reciprocating said header means, the reciprocating hammer having a control means, and means for connecting the hammer control means to said rivet header manually operative means for common control of both said means, said means for reciprocably mounting said rivet header means comprising a base plate .extending over said clamping means, a bushing extending through said base plate, said rivet header extending through said bushing, a coil spring about said rivet header based on said bushing, and means on said rivet header to base said coil spring thereagainst to thereby raise said rivet header each time it is depressed by said reciprocating hammer.

3. A riveting device for riveting studs to a member to be secured thereto, said device comprising means for temporarily clamping the stud, rivet header means, means for reciprocatably mounting said rivet header means in rivet heading position over the clamped stud, manually operative means for rotating said rivet header means to and fro, means for mounting a reciprocating hammer for reciprocating said header means, the reciprocating hammer having a control means, and means for connecting the hammer control means to said rivet header manually operative means for common control of both said means, said means for mounting the reciprocating hammer for reciprocating said header means comprising an apertured base plate through which the barrel of the hammer is extended, means fastening tne barrel to said apertured base plate, supporting rods on which said apertured plate is mounted, and a hammer holder mounted on the hammer, said hammer holder being provided with guide holes through which said supporting rods extend.

4. A riveting device for riveting studs to a member' to he secured thereto, said device comprising means for temporarily clamping the stud, rivet header means, means for reciprocatably mounting said rivet header means in rivet heading position over the clamped stud, manually operative means for rotating said rivet header means to and fro, means for mounting a reciprocating hammer for reciprocating said header means, the reciprocating hammer having a control means, and means for connecting the hammer control means to Said rivet header manually operative means for common control of both said means, said manually operative means for rotating said rivet header means to and fro comprising a gear secured about said rivet header means, a second gear of substantially greater thickness than said rst mentioned gear, means for adjustably mounting said second gear, both vertically and horizontally, with relation to said rst gear, to properly mesh said gears together, said greater thickness of said second gear enabling said first gear to remain in mesh therewith while it is reciprocated with said rivet header means, a hand lever, and means for securin-g said lever radially of said second gear.

5. A riveting device for riveting studs to a member to be secured thereto, said device comprising means for temporarily clamping the stud, rivet header means, means for reciprocatably mounting said rivet header means in rivet heading position over the clamped stud, manually operative means for rotating said rivet header means to and fro, means for mounting a reciprocating hammer for reciprocating said header means, the reciprocating hammer having a control means, and means for connecting the hammer control means lto said rivet header man- Number ually operative means for common control of both said means, said manually operative means for rotating said rivet header means to and fro comprising a gear secured about said rivet header means, a second gear of substantially greater thickness than said rst mentioned gear, means for adjustably mounting said second gear, both vertically land horizontally, with relation to said first gear, to properly mesh said gears together, said ygreater thickness of said second gear enabling said rst gear to remain in mesh there- With While it is reciprocated with said rivet Aheader means, a hand lever, and means for se- REFERENCES CITED The following references are of record in the lile of this patent:

UNITED STATES PATENTS Name Date Allen Oct. 5, 1875 Seng Oct. 3, 1922 Carney Nov. 29, 1904 Manning Mar. 16, 1886

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