US434322A

US434322A - Seam-compressing machine

Info

Publication number: US434322A
Authority: US
Publication date: 1890-08-12
Anticipated expiration: 1907-08-12

Description

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G. W. & J. W. GRIM. SBAM GOMPRBSSING MACHINE.

No. 434,322. Patented Aug. 1 18.90.

I m uewfow UNITED STATES PATENT OFFICE.

GEORGE \VASHINGTON CRlM AND JOHN IVILLIAM CRIM, OF NEV MARKET,

VIRGINIA.

SEAM-COMPRESSING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 434,322, dated August 12, 1890.

Application filed January 30, 1890. Serial No. 338,586. (No model.)

'To all whom it may concern.-

- chine for Compressing the Seams of Sheet Metal, of which the following is a specification.

This invention relates to machines for compressing the seams of sheet metal; and it has for its object to provide a machine which shall be simple in construction, inexpensive, and easily operated, and by means of which ordinary single seams may be compressed so as to form lock-seams, which, without necessity for soldering, shall be sufficiently secure to enable the sheets thus joined to be manipulated without danger of coming apart.

The invention consists in theimproved construction, arrangement, and combination of parts which will be h ereinafter fullydescribed, and particularly pointed out in the claims.

In the drawings hereto annexed, Figure 1 is a perspective view of. our improved seaming-machine. Fig. 2 is a longitudinal sectional view of the same. Fig. 3 is a vertical transverse sectional View showing the sheets of metal in position for being operated upon. Fig. 4 is a bottom view of the carriage, having the forming and compressing rollers. Fig. 5 is a perspective view of the ends of two sheets of metal the edges of which have been joined by a single seam, ready to be operated upon by our improved machine. Fig. 6 is a similar View, showing the sheets of metal after the seam has been compressed by the machine. Fig. 7 is a side view illustrating a modification in the construction of the machine.

Like numerals of reference refer to like parts in all the figures.

1 designates the base of a machine which is provided with uprights 2 2, the upper ends of which have openings 3, in which is seated a cross-bar 4:- The latter is vertically adj ustable, either by means of set-screws, as'shown at 5, or by any other suitable means, such as keys or wedges of different thicknesses. This is for the purpose of adj ustingthe said cross bar according to the thickness of the metal which is to be operated upon.

7 designates the longitudinallymovable carriage, which is composed of the side pieces 8 8, between which are journaled the forming and the compressing rollers, which are designated respectively by 9 and 10. The forming-roller 9 has a shallow annular groove 11, of a width equal to the width of the seam. The face of the compressing-roller may either be straight or slightly convexed. Likewise journaled between the side pieces of the carriage is a track-roller 12, which bears against the under side of the bar-4:. The opposite sides of the carriage are provided with ha'ndles 13, adapted to be grasped by the operator.

The cross-bar 4 is provided in its underside with a longitudinal groove 14, in which the the gage-arms 15 are hinged loosely upon transverse pins or bolts. Said gage-arms extend downwardly nearly to the base 1, and they are so arranged as to be in alignment with the rear edge of the groove 11 in the formingroll, and they serve to stop the. seamed sheets of metal as they are being placed in position in the machine by coming into contact with the edge of the seam, thus insuring the placing of the material in the machine in true position forbeing operated upon. I

Suit-ably attached to -the front edge of the base are the posts 18, upon the inner sides of which are journaled rollers 19. These rollers perform the. double function of gaging the position of the sheetsthat are to be operated upon and of holding the said sheets flat upon the base while they are being operated upon. One or both of the posts 18 may be longitudinally adjustable upon the 'base. The adjustment may be effected, for instance, by mounting the said posts in a longitudinalgroove in the base and securing them at any desired adjustment by means of set-screws. The machine will thereby be adapted to operate upon sheets of different width.

The base is provided in the rear of the longitudinal movable carriage with guide-flanges 20, to guide the sheets as they leave the machine. Provision may be made for the adj 11stment of said flanges by mounting the latter 10o detachably by means of stud-bolts or in any other suitable manner.

To the front edge of the base of the mach ne is hinged a drop-leaf 22, which, when ralsed, forms a table upon which the work may be placed by the operator and from which t may be conveniently fed to the machine. 10 the rear edge of the base are hinged the arms 23, at the outer ends of which is journaled a shaft 24, carrying a roller 25, upon which the sheets may be wound as they leave the machine. The roller-shaft is provided with a crank 26,by means of which it maybe turned, and with a ratchet-wheel 27, engaging a pawl 28, which holds the roller against unwinding. The pawl 28 may be pivoted to one of the hinged arms 23. When the machine is not in use the drop-leaf may be lowcred and the hinged arms carrying the roll may be raised to an upright position, so that the machine will occupy but little room.

The operation of this invention will be readily understood from the foregoing description, taken in connection with the drawings hereto annexed. The seams by which the sheets are joined are formed by simply turning the adjacent edges of the sheets in opposite directions and locking them together. they are then placed in the machine with the scam in contact with the lower ends of the gage-arms. The operator then grasps the handles on opposite sides of the carriage, and standing at one end of the machine pushes the carriage over the seam. The sheet operated upon is meanwhile held in proper position by holding the scam in contact with the lower ends of the gage-arms. When the carriage is pushed forward over the seam the latter is engaged by the forming-roller, the groove in which accommodates the thickness of the seam, while the metal on both sides of the seam is forced in a downward direction therebylocking the seam and preventing the sheets from coming apart. hen thus joined, the sheets may be readily manipulated for roofing and other purposes without necessity for soldering the joints. The degree of pressure exerted may be regulated by the verticallyadjustable top bar 4, which forms the track, against the under side of which the trackroller 12 bears, and the said track-roller equalizes the pressure upon the grooving and compressing rollers. The said track-roller, when the carriage is pushed forward, also serves to press against the gage-arms 15 and to force them upward into the groove, where they remain out of the way until the carriage is moved back, when they drop by gravity back into their former position.

In Fig. 7 of the drawings we have illustrated a modification of our invention, which con sists in attaching to the carriage a longitudinal gage-bar 31, extending through a slot 32 in one of the uprights 2, and provided with downwardly extending arms or gages 33, which reach nearly to the base 1. A Slot 17 is formed in the upright 2 for the passage of said arms. These arms, like the gage-arms 15, previously described, are to be in alignment with the rear edge of the groove 11 in the formingroll, and their operation is identical with that of the hinged arms 15, save that While the latter are simply swung out of the way by contact with the track-roller, the arms 33, carried by the bar 31, are carried through the slot 32 of upright 2 and out of the path of the ma tcrial which is being operated upon.

B y theherein-described arran gem cut of the gage-arms we avoid the use of springs to restore said arms to position when the carriage having the seaming and compressing rollcrsis returned.

Having described our invention, what we claim is- 1. The combination of the base, the up rights, the track-bar, and the carriage having the forming and compressing rollers, and the gage-arms hinged in a groove in the lower side of the track-bar, substantially as set forth.

2. The combination, with the frame having the track-bar, of the longitudinally-movable carriage having the forming and compressing rollers, and the vertical gage-arms connected loosely to the underside of the track-bar and adapted to be engaged by the carriage and to drop by gravity to their normal position when not engaged by said carriage, substantially as set forth.

3. The combination of the frame, the longitudinally-movable carriage having the forming, compressing, and track rollers, the gagearms, and the hinged arms carrying the winding-drum, substantially as and for the purpose set forth.

i. The described machine for compressing seams, comprising the frame, the carriage havin g the track-rollers and the forming and compressing rollers, the posts having the gagerollers, the gage-flanges, the drop-leaf, and the hinged arms carrying the winding-roller, substantially as and for the purpose set forth.

In testimony that we claim the foregoing as our own we have hereto aiiixed our-signatures in presence of two witnesses.

GEORGE \VASHINGTON CRIM. JOHN \VILLIAM ORIM. \Vitnesses:

S. P. SHIRLEY,

at. M. WILLIAMSON.

IIO