US1288663A - Machine for making stair-treads and the like. - Google Patents

Description

W. R. ORMES.

MACHINE FOR MAKING STAIR TREADS AND THE LIKE. APPLICAHON FILED NOV- !1. NH].

1,288,663, Patented Dec. 24, 1918.

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W. R. ORMES.

MACHINE FOR MAKING STAIR TREADS AND THE LIKE.

APPLICATION man NOV. 11. 1911.

1,288,663. Patented Dec. 24, 1918.

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W. R. ORMES.

MACHINE FOR MAKING STAIR TREADS AND THE LIKE.

APPLlCATlON FILED NOV- 19H.

Patented Dec. 24, 1918.

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nu w. PnmLnna. wAsnnvrr WILLIAM R. ORMES, 0F WALTHAM, MASSACHUSETTS, ASSIGNOB TO UNIVERSAL SAFETY TBEAD COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

MACHINE FOR MAKING STAIR-TREADS AND THE LIKE.

Specification of Letters Patent.

Patented Dec. 24, 1918.

Application filed November 17, 1917. Serial No. 202,675.

To all whom it may concern:

Be it known'that I, WILLIAM R. ORMES, of Waltham, in the county of Middlesex and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Machines for Making Stair-Treads and the like, of which the fol lowing is a specification.

My invention is particularly adapted for the construction of plates for stair treads of a kind described in a companion application hereto, although it may be otherwise em ployed. It relates more particularly to means for enabling the blank or plate to be fed and for intermittently feeding the blank.

My invention will be understood by reference to the drawings, in which- Figure 1 is a side elevation,

Fig. 2 a plan, and

Fig. 3 a longitudinal section on line 3-3 of Fig. 2, of a machine embodying my invention.

Figs. 4, 5 and 6 are cross sections showing the dies by which the plate in question is constructed,

Fig. 7 being a cross section of the plate itself.

The plate A comprises rectangular flanges va which are died out from the body of the plate by the dies shown in Figs. 4, 5 and 6 and normally stand at substantially right angles thereto, being joined to the plate at one edge, Fig. 7 showing the plate in its re verse position in which it passes from the machine.

The novelty of this plate consists in leaving what I have termed a bridge-piece a between the openings from which the flanges have been cut, as described in the said application and as will be understood from Figs. 6 and 7.

B is a bed plate suitably supported. C is what may be termed an anvil or die holder suitably shaped and supported and having at its upper end C a recess within which the die member is carried. This die member is made up of a series of recesses c which are separated from each other by projecting members 0 0 (see Figs. 5 and 6) of differ ent widths, which support the plate during the forming operation, though the novel feature of my machine applies equally to a machine for the making of plates of a different character. The punch member C is contained in a recessed block C carried by a reciprocating head C being held in place within said block by a screw 0 This member comprises a series of punches c of suitable shape and character registering with the recesses 0. The head is constructed and operated in a manner well known, and hence need not be further described.

D is a stationary work support over which the plate A is fed by means of rolls D D mounted on shafts D D. The shaft D carrying the lower roll D is mounted in bearings in blocks I) supported between uprights D attached to the bed plate B. The shaft D carrying the upper roll D is mounted in sliding blocks D which slide between the uprights D*, the roll D being held against the roll I) by means of springs 65 which engage the blocks D Screws al control the tension of the springs, and eccentric shaft d extending across the machine and operated by a handle d allows the rolls to be separated in order to receive a fresh piece of work in a way well known. Each shaft D, D carries at each end a gear F F the gears on the two shafts being in mesh.

Between the feed rolls D D and the punch and die members and normally on a level with the table D there is located a table E, which is hinged at e to supports E mounted one on each side of the machine alongside one of the uprights D*. This table is provided with lateral guides E to direct the course of the plate A to the punch.

In order to give the plate A its necessary intermittent feed I provide a ratchet F mounted fast on a shaft f which is journaled on extensions D on one of the uprights D The ratchet F is operated by a pawl y. The shaft f also carries fast thereto a gear F in mesh with the gear F The gear F is fast with the roll D and meshes with a gear F fast with the roll D Thus the intermittent rotation of the ratchet F will cause the corresponding rotation of the two rolls D D which will feed the plate A toward the punch.

The pawl f is mounted on an arm F swinging on the shaft f. To a block F adjustably mounted on the arm F is connected by the link F the lever F pivoted at f to a hanger below the table B, the other end of the lever F being pivotally connected by a link F to the head C Motive power applied to the head C therefore, serves not only to operate the head, but also to operate the feed rolls D D by the gear train, etc. just above described.

In addition to the link F the reciprocating punch carrier or head C carries a link E which carries a pin working in a slot in one end of an arm E the other end of which is mounted on a shaft 0 supported in bearings on opposite sides of the table and carrying arms 6 in each of which is mounted a roll a which engages the under side of the table E. It will be seen that a portion of the vertical movement of the punch will thus cause the arms 0 carrying the rolls 6 to oscillate and raise and lower the free end of the table E, thus lifting and lowering the work carried by the table. In its lower position (see Fig. 3) the work lies on the anvil, C but when the arms a are in vertical position (see Fig. 1) the rolls e lift the free end of the table E and the work from a horizontal plane sufficient to clear the flanges from the die.

In addition, to strip the plate from the punches, I prefer to provide strippers e, which are plates preferably attached to the tops of the guides 6 between which the plate is fed. These plates have a space between them suflicient to allow-the punch member C to reciprocate vertically. The upward stroke of the head C carries the punches C above the level of the strippers 6 so that the under surface of the strippers will engage the top surface of the plate and the punches will be drawn out of it.

To assist in the feeding operation after the plate A has left the feed rolls, I have provided a toothed wheel G the teeth 9 of which are constructed and spaced to fit into the openings which the punch has made in the plate A. This wheel is located to receive the end of the work after its first end has left the die and to register with its perforations. Motion is given to this toothed wheel G by means of a worm gear G meshing with a corresponding gear G on the end of a shaft G suitably supported and having at its further end a similar worm connection G G the latter gear being on the shaft D with the roll D This construction is such that each movement of the ratchet F will cause a corresponding movement to be given to the toothed wheel G as well as to the feed rolls D D this movement being such as to bring one of the teeth 9 of this wheel into register with one of the openings in the plate A.

v The purpose of the lifting of the hinged table E is to lift the flanges a of the plate A out of the recesses 0 in the die so that the plate A may be fed without obstruction.

The purpose of the slotted connection between the parts E and E is to allow lost motion between these parts so that the arms 0 will only be given a restricted movement, such only being necessary to lift the flanges out of their recesses.

As the strips of metal, which are intended to be acted upon by the punch, are of considerable length, say ten feet or more, I provide preferably an addition,a table H onto which the plate A will be fed as the work of the machine is completed, thus keeping the plate flat, and this table may well have hinged arms H and a link H connecting said arms under which the plate passes so as to insure its being kept flat and in engagement with the teeth of the wheel G.

While I have shown this machine as constructed to make this particular kind of plate, my invention may be otherwise embodied and adapted to feed other kinds of work, its chief purpose being the provision of means whereby the plate may be lifted during the feeding operation so that the parts struck down from a plate will be lifted during the feeding operation out of the recesses into which they are struck.

While I have shown the preferred form of I my invention, it may be otherwise embodied. The position of the table E is immaterial so long as it lifts the work at the proper time and to a proper height to allow the feeding operation to take place.

hat I claim as my invention is 1. In a punching machine, the combination with a reciprocating punch carrier, of a cooperating die, a support for said die, a stationary stripping device sustained by said support above said die and serving to strip the work from the punch, means for feeding a strip to be punched above said die and beneath said stripping device, a hinged table on which the strip to be punched may I rest, and means, operated from said punch carrier, for raising one end of said table to lift the punched strip from the die when it is to be fed forward over the latter.

2. In a punching machine, the combination with a reciprocating punch carrier, of a cooperating die, a support for said die, a stationary stripping dev ce sustained by said support above said die and serving to strip the work from the punch, intermittingly rotating rolls for feeding a strip to be punched above said die and beneath said stripping device, a hinged table on which the strip to a cooperating die, a support for said die, a stationary stripping device sustained by said support above said die and serving to strip the work from the punch, intermittingly rotating rolls for feeding a strip to be punched above said die and beneath said stripping device, a hinged table on which the strip to be punched may rest, means, operated from said punch carrier, for raising one end of said table to lift the punched strip from the die when it is to be fed forward over the latter, means, also operated from said punch carrier, for intermittingly rotating said rolls, and a toothed roll, geared to said feeding rolls, for engaging the punched strip to feed the same forward.

4. In a punching machine, the combination with a reciprocating punch carrier, of a cooperating die, a support for said die, a stationary stripping device sustained by said support above said die and serving to strip the work from the punch, intermittingly rotating rolls for feeding a strip to be punched above said die and beneath said stripping device, a hinged table on which the strip to be punched may rest, means, operated from said punch carrier, for raising one end of said table to lift the punched strip from the die when it is to be fed forward over the latter, means, also operated from said punch carrier, for intermittingly rotating said rolls, a toothed roll, geared to said feeding rolls, for engaging the punched strip to feed the same forward, a second table serving to support the punched strip, hinged arms on said table, and a link connecting said arms and serving to hold said punched strip down in engagement with said toothed feeding roll.

5. In a punching machine, the combination with a reciprocating punch carrier and punch and a cooperating die, a die holder, a hinged work-supporting table adjacent said die holder, pivoted arms carrying rolls on which the free end of said table rests, a le ver for operating said arms to lift the free end of said table at intervals to raise the punch work from the die, and means, connected to said punch carrier, for operating said lever.

6. A machine of the kind described comprising a reciprocating punch, a die located to cooperate therewith, a feeding mechanism, means connected to said punch whereby said feeding mechanism may be intermittently operated, a stationary table to cooperate with said feeding mechanism to support the work before and after its engagement by said feeding mechanism, an oscillatory table also connected to said punch to be intermittently oscillated thereby and located in proximity to said die whereby it may lift the finished work therefrom, a toothed wheel adapted to engage the punched portion of the work, and means operated by said punch whereby said wheel may be rotated intermittently.

WILLIAM R. ORMES.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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