US1194290A - Cap-feeding mechanism fob biveting-machines - Google Patents

Description

A. R. HAVENER.

CA? FEEDiNG MECHANiSiVI FOR RIVETING MACHINES.

APPLICATEON FILED JAN. 24. 1916;

Patente Aug. 8, 1916.

3 SHEETS-SHEET I.

ARM/NEWER" CAP FEEDING MECHANISM FOR RIVETING MACHINES.

APPLICATION HLED JAN. 24. NIB.

1 (,1 QQQQGQ atented Aug 8, 1916.

3 SHEETS-J'HEET 2.

I 1' v I 1 1 1 A R, HAVENER.

CAP FEEDING MECHANISM FOR RIVETING MACHIES.

APPLICATION FILED JAN- 24, I916.

Patented Aug. 8, 1916 3 SHEETS-SHEET 3.

ARTHUR It. HAVENER, OF WALTHAM, vMASSACHUSETTS,- ASSIGNOE TO J UDSON L. THOMSON .MFG. (30., A CORPORATION OF MASSACHUSETTS.

CAP-FEEDING- MECHANISM FOR BIVETING-MACHINES.

' Specification of Letters Patent.

Application filed January 24, 1916. Serial No. 73,787.

To all tvhom it mag concern:

Be it known that I, ARTHUR R. HAVENER,

\Valtham, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvements in Cap-Feeding Mechanism for Riveting-Machines, of which the following is a specification.

This invention relates to machines for setting rivets in sheet material and in the particular embodiment of my invention disclosed in the drawings the machine illustrated is one which attaches articles to sheet material by means of rivets which are riveted in rivet caps, and the invention relates particularly to that portion of the machine which feeds the cap and places it in position for the rivet to be clenched therein.

In machines of this character the. rivet cap is disk-shaped and is fed to the rivet setting instrumentalities from a hopper down a vertical portion of the raceway around a curved corner portion of said raceway and along a horizontal portion of said raceway into alinement with the anvil and rivet setting instrumentalities. In the feeding of the rivet cap down the raceway, when it arrives at the curved portion, if gravity alone is depended upon to feed it around said curved portion from the vertical por-' tion of the raceway onto the horizontal portion thereof, it is liable to become stuck,

especially if there is any obstruction such as dirt or grease in the raceway, or if there is any inequality or imperfection n the rivet cap, and this invention is particularly devoted to the positive feeding of said cap around said curved corner portion and onto the horizontal portion of said raceway.

To theseends the invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims thereof. I have illustrated one embodiment of my invention in connection with a machine for attaching articles'to sheet material by means of rivets which are clenched in rivet caps, said machine being, substantially the same as a machine forming the subject-matter of an application for U. S. Letters Patent filed by me on September 27, 1915,'Ser1al l To. 52,816, and entitled Machine for attaching articlesto sheet material.

The invention consists in the combination and arrangement of parts set forth n the following specification and particularly I pointed out in the claims thereof. a citizen of the United States, residing at Referring to the drawings: Figure 1 is a left hand side elevation of a machine embodying my invention. Fig. 2 is a central longitudinal sectional elevation of the same. Fig. 3 is an enlarged side elevation, partly in section, viewed from the left of the machine and illustrating the mechanism for feeding the rivet caps. Fig. 4 is a front elevation: of the parts illustrated in Fig. 3. Fig. 5 isa sectional elevation taken on line 55 of Fig. 4. Fig. 6 is a front elevation similar to Fig. 4 but omitting the detent and showing the detent lingers in' section. Fig. 7 is a diagrammatic view illustrating the position of the detent fingers with relation to the rivet caps. Fig. 8 is a plan and sectional view ofone of the rivet caps.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 10 is the frame of the machine, 11 is a rivet holder to which the rivets are fed one by one from a hopper 12 down a raceway 13. The rivets are driven through the material and clenched in the rivet cap by a driver 14 which slides in a suitable bearing in the frame and to which a reciprocatory motion is imparted by a bell-crank lever 15, eccentric rod16 and eccentric 17 which is fastened to a rotary shaft '18. A

presser foot 19 holds theimaterial in position upon a work-support 20. An anvil 21 is provided in the upper end of a plunger 22 to which a vertical reciprocatory motion is imparted by a lever 23 connected by a link 24 Patented Aug. 8, 1916..

tical portion of the raceway rests against the upper edge of a reciprocatory slide 32 which is fastened to a tube 33 to which a reciprocatory motion is imparted by a lever 34 pivoted at 35 to the frame of the machine and rocked by a cam 36 fast to the shaft 18. Another rivet cap 28 rests against the lower rivet cap 28.

The vertical portion 30 of the raceway is joined to a horizontal portion 37 of said raceway by a curved corner portion 38. Said vertical portion 30 has a groove 39 a ng wh ch the rivet aps slide' and this is covered in the upper part of said raceway by cap plates 40 and in the lower part of the vertical portion of said raceway said groove is covered by a single cap plate 41'. The curved portion 38 of said raceway is left open at its upper side in order that rivet caps may be removed therefrom if desired, except that said open portion is closed at certain times by a device hereinafter described. The horizontal portion 37 of the raceway is also provided with cap plates 42 which cover the groove 43 into which the rivet caps are slid by the feed slide 32.

A detent 44 is provided adjacent to the curved portion 38 of the raceway and this detent comprises an arm 45 pivoted at 46 to the frame of the machine. The arm 45 has two fingers 47 fast thereto, these fingers being pointed at 48 and curved ,on their rear edges at 49. In addition to the fingers 47 the arm 45 has a downwardly projecting plate 50 fastened thereto which has a camshaped lower edge 51. A spring 52 attached to the arm 45 tends to rock the arm '45 downwardly about its pivot 46. I

A stop pin 53 engages one of the cap plates 42 of the horizontal portion of the raceway to limit the downward movement of the arm 45 and of the difierent parts of the detent attached thereto.

The general operation of the mechanism hereinbefore specifically described is as follows: The rivet caps descend the vertical portion 30 of the raceway 31, as stated, until the lowermost rivet cap 28 rests against the upper edge of the slide plate 32, while the next rivet cap 28' above said rivet cap 28 rests thereagainst in the position illustrated in Fig. 7 and in dotted lines in Fig. 3, When the slide 32 is moved backwardly or toward the left from the position shown in Figs. 2 and 3 to the position shown in Fig. 5, the detent arm 45 will be swung downwardly by the spring 52 as soon as the lower edge of the plate 50 is released by the slide plate 32 until the stop pin 53 engages one of the cap plates 42 of the horizontal portion 37. During this movement of the detent, as a whole, the pointed ends 48 of the detent fingers 47 are inserted between the two rivet caps 28 and 28', as illustrated in Fig. v7 in the space between the curved upper edge of the rivet cap 28 and the" curved lower edge of the rivet cap 28. At the same time that this movement of the de tent fingers occurs, they will move not only the rivet cap 28 downwardly with sufficient 60 force to cause it to pass downwardly and around the curved portion 38 of said raceway and onto the horizontal portion 37 thereof, as illustrated in Fig. 5, while at the same time the curved rear edges 49 of these fingers will engage the. lower edge of the.

comprisin rivet cap28 and, prevent its moving down the raceway until after another complete cycle of operations of the machine takes place.

The movement of the detent fingers toward the vertical portion of the raceway and simultaneously downward is obtained by the location of the pivot 46 which is at the rear of the vertical portion of the raceway and above the pointed ends 48 of the fingers 47. The detent now being in the position illustrated in Fig. 5, upon the next.

anvil 21 and with the driver 14. The lever, 23 is then actuated bv the lever 25 and cam 27 to carry the rivet cap up against the under side of the goods as it rests upon the work-support 20, while ,the rivet holder 11 is brought downwardly adjacent to the upper side of the material into which it is to be driven, and the rivet is then driven out of the rivet holder 11 and through the material to clench the same in the rivet cap 28 by the driver 14 which is operated by the bell-crank lever 15, eccentric rod 16 and eccentric 17. During this operation the rivet holder is operated to move downwardly by means of a slide 54. lever 55 and cam 56 and is moved upwardly on the return motion through a spring 57 which connects the lever 55 to the slide 54.

It will be noted that when the plate 50 assumes the position illustrated in Fig. 5, the lower edge of said plate forms a cover for the curved portion 38 of the raceway to prevent any rivet caps from passing out of said curved portion as they pass around the samefrom the vertical portion of the raceway to the horizontal portion thereof."- Upon the next forward movement of the slide 32 the operation hereinbefore described is repeated and another rivet cap is carried forward into alinement with the anvil and driver to have another 'rivet clenchedtherein.

Having thus described my invention,

what I claim and desire by Letters Patent to secure is:

1. A machine for feeding rivet caps and the like having, in combination, a raceway a vertically disposed portion and a horizontally disposed portion joined together by a curved corner portion, means for temporarily supporting two of said rivet caps on said vertically disposed portion of said raceway and constructed and arranged to be withdrawn, a detent adjacent to said curved corner portion and means constructed and arranged to move said detent laterally with relation to the faces and between two of said rivet caps on the vertical portion of said raceway, in such manner that the lower one of said rivet caps will be pushed downwardly with sufficient force to cause. it to pass around said corner portion of said raceway after said supporting means has been withdrawn and the upper one of said rivet caps will be prevented by said detent from passing down said raceway.

2. A machine for feeding rivet caps and the like having, in combination, a raceway comprismg a vertically disposed portion and a horlzontally disposed portion joined together by a curved corner portion, means for temporarily supporting two of said rivet caps on said vertically disposed portion of said raceway and constructed and arranged to be withdrawn, a detent adjacent to said curved corner portion and means constructed and arranged to move said detent laterally with relation to the faces and between two of said rivet caps on the vertical portions of said raceway and to move said detent downwardly in such manner that the lower one of said rivet caps will be pushed downwardly with sulficient force to cause it to pass around said corner portion of-said raceway after said supporting means has been withdrawn and the upper one of said rivet caps .will be prevented by said detent from passing down said raceway.

3. A machine for feeding rivet caps and the like having, in combination, a raceway comprising a vertically disposed portion and a horizontally disposed portion joined together by a curved corner portion, means for temporarily supporting two of said rivet caps on said vertically disposed portion of said raceway and constructed and arranged to be withdrawn, a detent adjacent 'to saidv curved corner portion with two fingers thereon and means constructed'and arranged to move said fingers laterally with relation to the faces and between the adjacent edges of two of said rivet caps on the vertical portion of said raceway and to move said fingers downwardly, in such manner that the lower one of said rivet caps will be pushed downwardly with suflicient force to cause it to pass around said corner portion of said raceway after said supportlng means has been withdrawn and the upper one of said rivet caps will be prevented by said fingers from passing down said raceway.

4. A machine for feeding rivet caps and the like having, in combination, a raceway comprising a vertically disposed portion and a horizontally disposed portion joined together by a curved corner portion, means for temporarily supporting two of said rivet caps on said vertically disposed portion of said raceway and constructed and arranged to be withdrawn, a detent adjacent to said curved corner portion, a pivot for said detent substantially parallel to the faces of said rivet caps on said vertically disposed portion of said raceway, two fingers'on said detent and means to rock said detent on said pivot, said pivot being so located relatively to said raceway that when said fingers are moved toward said raceway and between two of said rivet caps on said vertical portion of said raceway, said fingers will move downwardly, in such manner that the lower one of said rivet caps will be pushed downwardly with suflicient force to 0 .use it to pass around said corner portion of said raceway after said supporting means has been withdrawn and the "upper one of said rivet caps will be prevented by said fingers from passing down said raceway.

5. A machine for feeding rivet caps and the like having, in combination, a raceway comprising a vertically disposed portion and a horizontally disposed portion joined together by a curved corner portion, means for temporarily supporting two of said rivet caps on said vertically disposed portion of said raceway and constructed and arranged to be withdrawn, a detent adjacent to said curved corner portion, a pivot for said detent substantially parallel to the faces of said rivet caps on said vertically disposed portion of said raceway, means constructed and arranged to move said detent laterally with relation to the faces and between two of said rivet caps on the vertical portion of said raceway and to move said detent downwardly, in such manner that the lower one of said rivet ca s will be pushed downwardly with su cient force to cause it to pass around said corner portion of said raceway after said supporting means has been withdrawn and the upper one 'of said rivet caps will be prevented by said detent from passing down said raceway and a plate on said detent constituting a cover for said corner portion of said raceway when said-detent is in operative position, said plate being moved away from said corner portion and leaving the same uncovered when said detent caps on said vertically disposed portion of said raceway, a plate on said detent constituting a cover for said corner portion of said raceway when said detent is in operative position, said plate being moved away from said corner'portion and leaving the same uncovered when said detent is out of operative position, two fingers on said detent located on opposite sides of said plate and means to move said detent laterally with relation to the faces of said rivet caps until said fingers project between the adjacent edges of said rivet caps on the vertical portion of said raceway, in such manner that the lower one of said rivet caps will be pushed downwardly with suflicient force to cause it to pass around said corner portion of said raceway after said supporting means has been withdrawn and the upper one of said rivet caps will be prevented by said fingers from passing down said raceway.

' 7. A machine for driving a rivet in a piece of sheet material and clenching the same in a rivet cap having, in combination, a raceway comprising a vertically disposed portion, a horizontally disposed portion and a curved corner portion j oining said vertically disposed and horizontally disposed portions of said raceway together, a detent adjacent to said curved corner portion, a plate on said detent constituting-Ya cover-for the corner portion of said raceway when said detent is in its operative position, said late having a cam-shaped lower edge, two ngers on said detent located on opposite sides of said plate, means to move said detent until said fingers project between the adjacent edges of said rivet caps, in such manner that the lower of said rivet caps will be pushed downwardly with suflicient force to cause it to pass around said curved portion of said raceway and the upper of said caps will be prevented from passing down said raceway and a slide constructed and arranged to be moved along the horizontal portion of said raceway to engage the rivet cap on said horizontal portion, said slide in its forward movement being also constructed and arranged to engage said cam-shaped edge of said detent plate and move said fingers out of engagement with the rivet cap located immediately above them on the vertical portion of said raceway to allow said last-named rivet cap to descend said vertical portion of said raceway and rest upon said slide.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses;

ARTHUR R. HAVENER.

Witnesses:

CHARLES S. Goonrive, SYDNEY E. TAFT.

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