US68680A - Riveting machine - Google Patents

Description

J. ADT.

RIVBTING MACHINE. f No. 68,680, Patented Sept. 10, 1867.

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JOHN ADT. OF W'OLGOTTVILLE, CONNECTICUT.

Letters Parent .Na 68,680, dated September 10. 1867.

IMPROVEMENT IN 'RIVETINGMACHINE fdilge Siphon referti-tf tu in ttusve gettus @nicht nnrnutinmnrt nf tige smut,

TO ALL WHGM I'l MAY CONCERN Be it known that I, .TDHN ADT, of Wolcottville, in the county of Litchfield, and State of Connecticut, have invented certain new and useful improvements in Riveting Machines; and I do hereby declare that the i`ol-y lowing is a full, clear, and exactdcscription of the same, reference being had to the accompanying drawings muknga portion of this specification, in whichr Figure 1 is a plan or thp t'iew of a riveting machine constructed according to my invention.

Figure 2 is a vertical longitudinal section ofthe saine.

Figure 3 is n. vertical transverse section, taken in the line a: x in figs. 1 and 2.

Similar letters of reference indicate corresponding parts in all the figures.

The object of this invention is to provide a means whereby rivets may be simultaneously headed at. both ends, as is required, for instance, in the manufacture of furniture-casters and other like articles.

VThe invention consists in two riroting-ha-mniers, so combined and operated as to strike simultaneously upon the two opposite ends of the rivet, 'such rivet being, es it were, supported by each hammer against the stroke or impact of the other. The invention further' consists i the employment of suitable springs within the sleeves in` which are situated the aforesaid hammers wherebyr the `blows of the hammers Vduringthe riveting operation' are rendered much more efficient than would b'e the case ii` such springs were dispensed with. The invention further consists in the combination with the"hommer`s of suitable supporting carriages and operating cams, whereby not only may the required reciprocating movementA he communicated to such hammers, but whereby they may also be adjusted at any distance apart that the exigencias ofl the work may necessitate. The inven-` tion further consists' incertain novel me' ns whereby'the working parts of the machine may, with very great *,fccility, he brought and retained in position for heading rivets of different lengths.

To enable others to understand` the construction and operation of my invention, I will proceed to describe it with reference to the drawings. Y i

The supporting framev of the machine is shown at A, and is constructed with longitudinal guides a, which receive two sliding carriages B. Situated. longitudinally upon the upper side of cach of the carriages I B, and working in suitable bearings formed thereon, is a cylindrical sleeve, C, placed upon which, and held in position by annular Hongos a', is a collar, In., from which a stud, (1*, extends. downward through a slot, la', formed longitudinally in thel top of the carriage, and has its extremity fitted into a com groove, c, provided in a cam-wheel, 0*, which is arranged upon a longitudinal shaft, d, extending from one cnd ofthe frame A tothe other, underA neath the aforesaid carriages, as shown more. fully in iig. 2. Eachof the cam-wheels C* is attached to the shaft d by means of an internal feather, c', fitting into a longitudinal groove, c,in the shaft d, in such manner that the said cam-wheel, when rotating with the shaft, will h c free to slido'thercon, the upper side of the cam* wheel being furthermore so fitted into a suitable recess, in the under sido of the carriage B above it, that a slid4 in g movement of the carriage will communicates. corresponding movement to the cnn1-\\'heel, in order that suchcarriage and cum-wheel may he retained in their proper relative positions during` thc operation ot' the machine; Each of thc cam-wheels just mentioned' is connected with the sleeve C above it by ineens ci' a band, c, extends l ing from a small pulley, f, lformed upon thcend of vthc couru-heel to u. similar pulley, f, provided upon the sleeve. Euch of the sleeves C is provided at'its ends with cups g, formed centrallyifin which are holes through which extend the end-s of the sliding-hammer D, which is situated within the sleeve, and isV furnishedht itsr central part. with au annular rib, 7i. 'iwospiral springs, marked respectively e* and gif, are situated, one upon l each end portion ofthe hammer, between the central annular rib thcreofjust mentioned :und the closed ends of t-hc sleeves; the said springs tending to bring the hammer, with its rib h, at or near the central part of the sleeve,

- as shown in tig. 2, and the purpose of which will he hereinafter fully set forth. T'he inner ends of the hammers D are bevelled oii` upon each side,4so that the face-thereof is made comparatively narrow in proportion to its length. Placedbetween-thc outer ends of the carriages B, and the adjacent ends of the frame A, are spiral springs z', which act to draw the carriages outward toward the said ends of the frame. Extending inward from` the carriages and downward over pulleys m are two straps u, thc lower ends of which u-rc attached to u. treadle, E, in suoli n. way that when the treadle is `forced downwards the carriages, and consequently the hammers D rcarried thereon, will be caused to approach e'ach other, as is required in bringing the said hammers in convenes, 68o 2.

ient proxlmity to the work. Findicates adjustable stop-plates, which are secured to the upper side of the franie'A, being attached thereto by screws m', passing downward through long kslots n." formed in the said plates, so that' by these means the plates may be adjusted longitudinally when desired; the said plates being furnished at their ends with inivardly projecting spurs r, which limit the movement in either dreeton of the contiguous carriage B. Situated transversely 'at the centre of the frame A, between the inner ends of the hammers D, is a rest, G, the oieeof which is to support the article to be riveted, and the upper surface of ivhieh may be of any shape required toseoure the retention of such article during the riveting operation.

In using the machine a rotary motion is given to the shaft d, through the agen'ey of a suitable band-wheel, I, and the article to be riveted is placed upon the rest-G, with the rivet. itself in line with tho hammers D, whereupon the treadle E is pressed' downward until the carriages are brought against the innermost spurs i' Yofthe stop-plates F,'wlich, having been previously adjusted, stop thesaidV carriages, in that posit-ion in which the hammers will be brought to the required distance from the ends ofthe rivet. The sleeves C, and conscquently the hammers D, placed therein, receive a reciprocating motion 'through the'ageney of the grooves c, and at their inward strokes strike simultaneously upon the two oppositeA ends of the rivet to upset or head the same, such simultaneous operation of the hammers enabling the stroke of one to balance, as it were, that of the other, so that one hammer serves to support the rivet against the impact ofthe opposite one.

Inasmuch as the bands c partially rotate the hammers at each stroke, it follows that the narrow ends or faces oifsueh hammers are turned into a diiTercnt position, and consequently act upon different portions of .the ends ofthe rivet at each blow, the said ends being thu-s more uniformly and evenly turned over er upset than is found practicable with hammers made with circular faces, and having lsimply a longitudinal or vibrating movement, at vthe same timetliat the springs e* y* being compressed, one at eaeh inward and outward movement of the hammers, tend to bring the said hammers to the position shown lin fig- 2, and hereinbefore explained. The motion of the aforesaid hammers i's'rendercd much more steady than'would be the ease if they were operated by the cams C* alone, and the efiiceny of their laction in riveting','is, ,of course, proportionally increased. The rivetihaving been thus headed at both ends, the treadle E is released, whereupon the springs z' draw farther apart the carriages B, and the riveted article being superseded upon'the rest G, by a similar one, the riveting operation is repeated.'

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The two hammers D, so combined andoperated as to simultaneously strike the two ends ofthe rivet in heading the same, by means substantially as herein set forth. i

2. The combination, with the reciprocating hammers D, -of sleeves C and springs e* ,r/"t, the whole arranged to operate substantially as and for the purpose herein set forth. I

3. The comliination of the cam-wheels C* and cai-rages B with the reciprocating hammers 1J. constructed and operating substantially as and for the purpose herein set forth..

4. The adjustable stop-plates F, in combination with the carriages carrying the rivctlng-hammcrs, substantially als and for the purpose herein set forth. i l

i JOHN ADT.' Witnesses:

'.Inos. A. ELLIOTT,

F. S. HUNGERFORD.

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