US1081975A - Machine for inserting fastenings. - Google Patents

Description

F. D. LOGKE.

MACHINE FOR INSBRTING PASTENINGS.

APPLICATION IILED FEB. 1, 1913.

1,081,975, Patented Dec. 23, 1913. 5 5 a O u b O c B6 i Z Flgtl, B6 5 1 WNITED STATES PATENT @FFICE.

FRANK ID. LOOKE, OF HUDSON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF IPATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented Dec. 23, 1913.

Application filed February 1, 1913. Serial No. 745,673.

To all whom it may concern Be it known that I, FRANK D. LOCKE, a citizen of the United States, residing at Hudson, in the county of Middlcsex and Commonwealth of Massachusetts, have invented certain Improvements in Machines for Inserting Fastenings, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for inserting fastenings and particularly to improvements in fastening inserting machines of the type shown in United States Letters Patent No. 447,358, granted March 3, 1891, to S. WV. Robinson and S. P. WVatt.

In the assembling of machines built in accordance with the disclosure in the Lot ters Patent above identified, difficulty has frequently been experienced in securing a proper alinement of the awl with its guide opening in the nose-plate. To bring the awl into proper alinement with its guide opening it has heretofore been the practice to bend the awl-bar by peening or otherwise until the desired adjustment was obtained. This has been an expensive and unsatisfactory method, owing to the large amount of time consumed in repeated trials before the proper result was obtained and also because of the occasional breaking of the awl-bar during the process. Furthermore, when the parts of the machine became worn, the awlbar would again get out of alinement and cause breakage of the awl. In such cases the operator sometimes attempted to peen it himself but, since such an operation required an expert, he was liable to injure the machine still further.

An object of this invention is to provide means for clamping the awl firmly in any desired vertical adjustment as well as to provide convenient and efficient means for alining the awl-bar so that it will cooperate properly with the other parts of the machine, thus overcoming the difficulties above mentioned.

Other features and objects of the inven tion will be apparent when the following description and claims are considered in connection with the accompanying drawings, in which parts corresponding to those shown in the above identified Letters Patent have been given reference characters also corresponding thereto.

In the drawings, Figure 1 is a side elevation looking from the left of the machine and shows enough of the machine of the above mentioned Letters Patent No. 447,358 (see Figs. 2 and 21 therein) to enable one to understand the present invention; Fig. 2 shows, upon a larger scale, one feature of the invention in detail and is a section taken on line 2-2 of Fig. 1, as viewed from above. Fig. 3 is a front elevation, also upon a larger scale, of the lower end of the awl-bar and shows the awl together with the improved means for clamping the same in proper ver tical adjustment; Figs. 4 and 5 show respectively perspective views of the inner and outer clamping plates which hold the awl in vertical adjustment; and. Fig. 6 shows, in perspective, one of the awl clamping screws, illustrating the projection on its head which prevents it from turning.

Since the operation of the machine as a whole is fully described in the Letters Patent No. 447 ,358 it is unnecessary to describe it here except in so far as it relates to the operation of the awl mechanism. By means of the driving mechanism shown in the said Letters Patent the main shaft A and the crank-pin b attached thereto, are re volved in a counter clock-wise direction (see Fig. 1). The crank-pin b operates the pitman B which is connected to and guided at its lower end by the rocking lever C which is pivoted at C. At the upper end of the pitman B and connected to the ear 6 thereof, is a link B which operates the lever B being jointed to said lever at B. The lever B is pivoted at B on the frame B of the machine. Said lever is jointed at Z) to the awl-bar B, which is thus moved up-and-down together with the awl Z). The awl and awl-bar are also given a forward and backward swinging motion by means of a part projecting from the awl-bar and which enters the cam-track B in the camplate B This swinging motion causes the awl to enter the opening 19 in the noseplate D upon its descent and to be out of the way in the upper portion of its stroke so that the driver may enter the same opening at the proper time. For a more complete gag description and illustration of the parts herein-above mentioned, reference may be had to the Letters Patent No. 447,858.

It will be noted that all the parts must be so adjusted that when the awl is to be returned into its operative position it shall enter the opening 19 in the nose-plate D with certainty and precision, otherwise there is liability of breakage of the machine and injury to the operator by the projection toward him of the broken pieces of the awl. As hereinbefore pointed out, an adjustment of the parts to secure proper alinement which must be effected by peening or in any other similar and crude manner is not only wasteful of time but is frequently only temporarily effective to secure the desired alinement. An important feature of the invention which is about to be described is the provision of an adjustment particularly adapted to the movement of these parts which may be quickly and easily efi'ected and which, when it has once been made, is substantially permanent or at least lasts until the parts become so much worn that a readjustment and re-alinement will become necessary in any case.

Before describing the present invention in detail it should be noted that, before this invention was made, the commercial machine which embodied the subject matter of the above identified Letters Patentdiffered somewhat from the disclosure therein. In

the said Letters Patent the pin or stud (see A Figs. 2, 2 and 2 therein) which is the part that projects from the awl-bar B into the cam-track B also projects through the cam-track A and serves as a means to position the driver-bar and driver. In the commercial machine above mentioned this pin or stud passes only through the can1- track B in the cam-plate B the driver being positioned by other means which need not be described herein since it is not pertinent to the present invention. Although it is equally applicable'to the machine of said Letters Patent, the present invention will be shown and described as embodied in the commercial machine, an important feature of this invent-ion consisting in an adjustable device which projects from the awl-bar into the track of the cam-plate (thus replacing the nonadjustable pin or stud numbered A. in Letters Patent No. 447,358).

The present invention will now be explained in detail. The awl bar B has screwed into it a threaded bushing 61 (see Fig. 2) having a head 65 upon which a suitable wrench may be used to adjust it. The length of this bushing under the head is a trifle shorter than the thickness of the awlbar B so that it can never extend completely through the awl-bar. Through this bushing and through the slot in the cam-plate 13? passes the shouldered screw60, the length of its shouldered portion 66 being enough greater than the thickness of the cam-plate B to allow a good running fit between the head 67 of the screw and the head 65 of the bushing. In order to adjust the awl-bar laterally (or away from the cam-plate), the bushing 61 may be adjusted in or out by turning its head 65 by means of said wrench. After proper adjustment has been made, the nut 62 is tightened securely and is prevented from turning by'tightening the check-nut 63.. This construction allows free but confined movement of the shouldered portion 66 in the camplate B while the nut 62 and check-nut 63 lock the bushing and shoul dered screw in permanent adjustment in the awl-bar as will now be explained. The shoulder on the screw is brought tightly down upon the head of the bushing 61 by means of the pressure exerted by the nut 62. The frictional engagement between the two is suiiicient to prevent any relative rotation between them. Furthermore, the pressure exerted by the shoulder upon the bushing increases the frictional engagement between the threads-of the bushing 61 and the awl-bar B and prevents relative movement between these two. The stud, and thereby the bushing, is also held against turning inward by the frictional engagement of the tightened nut 62 with'the Stud 60 and with the awl-bar B. The nut 62 and check-nut 68 positively prevent the stud from turning outward.

Since the shouldered portion 66 of the screw 60 runs freely in the cam-track in cam-plate B and has little tendency to turn and since it is possible to exert considerable pressure upon the nut 62, to hold the parts in frictional engagement, it has been found in practice that the mechanism works satisfactorily and affords a convenient means of adjusting the awl bar, laterally. If the bushing becomes so firmly fixed in position that it is difficult to turn it by applying a wrench to the head 65, the stud 60 can be taken out and a screw-driver applied to the slot 64: in the other end of the bushing. It should be understood that it is seldom necessary to make this adjustment except when wear occurs or when a new awl-bar is installed.

To hold the awl firmer than was possible with the earlier construction and to allow for a vertical adjustment of the same, the following improved awl-clamp for this machine has been devised. This consists of two steel plates, 70 and 71, shaped to fit afrecessed portion of'the awl-bar, and provided with grooves 72 and 73 respectively, preferably nearly semicircular in shape. By

means of the collar nuts 77 and clamping screws 7 6 these plates can be drawn together to clamp the awl between these grooves in any desired vertical adjustment and at the llO same time the parts are clamped to the awlbar. The outer plate 71 has two counterbored holes so that the heads of the clamping screws will be flush with its outer surface. To prevent these screws from turning when the nuts are being tightened, there extends from the head of each screw a projection 79 which enters a corresponding groove 78 in the periphery of the counter-bored hole in which it lies. lVhile all the holes through which the bodies of the screws pass are slightly larger than said body portions of the screws, the inner plate 70 is held in fixed relation with the awl-bar B by means of the dowel pins 75 in the awl-bar which pass into dowel holes 7 4 in the inner plate 70.

Although the parts indicated by the ref erence characters a, 0, B, B 13 (Z and F have not been specifically described in this specification since such description is unnecessary to an understanding of the present invention, these reference characters have been added to Fig. 1 of the drawing in order that the parts relating to the awl mechanism may be more readily found from among the other mechanisms in the Letters Patent No. 14:7 ,358 where these parts are fully described and where they are in dicated by the same reference characters.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for inserting fastenings, the combination with an awl, an awl-bar, an awl-bar operating mechanism, and an awl-bar cam-plate, of means arranged to guide said awl-bar by said cam-plate and also to secure said awl-bar in adjusted relation to the cam-plate.

2. In a machine for inserting fastenin s having an awl-bar, a combined awl-bar a djusting and guiding mechanism comprising a cam-plate with a cam-track therein, a bushing adjustably threaded into said awl bar, a shouldered screw having its shoulder in contact with one end of said bushing, the portion on one side of the shoulder passing through the bushing and the portion on the other side passing through the cam-track to be guided thereby, means upon the screw to confine said portion for free movement in the cam-track and means for securing the screw and bushing in fixed relation to the aw1-bar.

3. In a machine for inserting fastenings having an awl-bar and means cooperating therewith, including a cam-plate having a cam-track, the combination of a headed bushing threaded into the awl-bar and a shouldered screw and nuts thereon by which the bushing is clamped in adjusted position, said screw being guided in a track in the cam-plate and held for free movement in said track by its head and the head of the bushing.

1. In a machine of the class described, having fastening inserting means, including an awl-bar and a guiding cam-plate therefor, the combination of a bushing in said awl-bar, a member passing through said bushing and constructed and arranged to be guided by said cam-plate and a member or members to secure the bushing and guiding member in adjusted position with respect to the cam-plate.

5. In a machine of the class described, having fastening inserting means, including an awl-bar and guiding means therefor, the combination of an adjusting bushing for said awl-bar, a guiding screw passing through said bushing and said guiding means, and a binding nut or nuts on said screw to secure the parts in adjusted position.

6. In a machine for inserting metallic fastenings having a nose-plate, an awl, a guiding opening in the nose-plate for the awl, an awl-bar and a guiding cam-plate for the awl-bar, the combination of a screwthreaded bushing in said awl-bar and a member passing through said bushing, said bushing and member providing means for adjusting the awl-bar to aline the awl with the opening in the nose-plate, and means for securing the parts in alin ed position.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK D. LOCKE.

Witnesses:

WVILLIAM B. KING, II. Donsnr SPENCER.

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

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