US1743209A - Fastener-setting device - Google Patents

Description

O.J. GROEHN 1,743,209

FASTENER SETTING DEVI GE Filed April 5. 1926 2 Sheets-Sheet 1 Jan; 14, 1930. J GROEHN V 1,743,209

FASTENER SETTI DEVICE Filed April 5. 1926 2 Shets-Sheet 2 Patented Jan. 14, 1930 UNITED ST TE o'rro- .1. e'nonnn, or GBOSSE POINTE PARK,

PATENT OFFICE."

, MICHIGAN, ASSIGNOR TO HUDSON MOTOR CAR COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN Application filed April 5,.

This invention has-for its object to provide a portable device for setting fasteners in relatively inaccessible places, and more particularly to provide a power operated device for setting tubular or other rivets to connect the inturned flanges of the panels of metal automobile bodies, the device being especially, although not exclusively, adapted to the setting of rivets in the formation of panel joints of the type disclosed and claimed in my prior application Serial No. 50,406, filed August 15,

1925, patented December4, 1928, No.-1,693,-

750. In the formation ofsuch and similar panel oints it is desirable that the rivets connecting the panel flanges be set asclosely as possible to the inner faces of the flanges, while the nature of the work is such as substantially to require the use of power operated setting devices. Moreover, in the assembling of a body, it is necessary to set a considerable number of rivets whose positions are widely distributed over the interior of the body, so that considerations of economy, efliciency, expedition, and convenience call for the use of a portable device for this purpose. The present invention has, therefore, for its primary object to provide a relatively light, portable riveting device capable of operation in the position referred to and of exerting a force of the amount required for this class of work.

The foregoing and other objects of the invention, together with means whereby the latter may be carried into effect, will best be understood from the following description of certain forms or embodiments thereof shown in the accompanying drawings. It will be understood, however, that the particular constructions described and shown have been chosen for illustrative purposes merely, and that the invention, as defined by the claims hereunto appended, may be otherwise embodied without departure from its spirit and scope.

In said drawings:

Fig. 1 is a substantially central, longitudinal section of a riveting device embodying the invention.

Fig. 2 is a plan view thereof.

Fig. 3 is a detail section of a panel joint, showing in dotted lines the cooperating jaws 1926. Serial No. 99,795.

of the riveting device in position to set a rivet in said joint.

Fig. 4is a view similar to Fig. 1, show-' ing another form of the invention.

Fig. 5 is a detail section on the line 5'5,

Fi 4. In Fig. 3 are shown two contiguous panels 15 of an automobile body, said panels having at their adjacent edges inturned flanges 16 WhlCh, together with the interposed flange 17 of 'a combined stiffening and finishing molding 18, are secured together by rivets 19, herein shown as of the tubular type. In order to prevent o ening of the panel joint at the outer side of the body under tensile strains, it is desirable that the rivets 19 be set as closely as possible to the inner faces of the panels 15. To this end, the rivet setting device embodying the present invention comprises cooperating relatively movable upper and lower setting jaws 20 and 21 carrying, as closely'as possible to their free ends, co;

operating setting dies 22 and 23. The operat 111g mechanism for the jaws is laterally offset of the link 25 being pivoted at 28 to the free end of the jaw 20, and the duter end of the link 26 being pivoted at 29 to cars 30 formed on the jaw 21. Beyond the pivot 29 the lower jaw 21 carries a fluid pressure cylinder 31 which in the construction shown is formed integral therewith. Operating in the cylinder 31 is a piston 32 having a piston rod 33 which extends through an opening 34 in the end of the cylinder and is connected with the pivot 27 of the toggle. If desired, the piston rod 33, its-connection with the toggle, and the toggle itself may be housed and protected by flanges 35 formed on the lower jaw 21 and extendingfrom the end of the cylinder 31 to l connection 38. At its opposite or mner end the passage 37 communicates-with the outer end of the cylinder 31 throu h a nipple 39 by which the supporting han le 36 is secured to the head 40 of said cylinder. Fluid pres sure admitted to the outer end of the cylinder 31 from the connections described causes the piston 32 to move inwardly, or toward the right in Fig. 1, to close the aws upon the work, said piston being moved in the opposite direction to open the jaws by means of a spring 41 inter osed between said piston and the inner end 0 the cylinder and surrounding the piston rod 33. The passage 37 is intercepted by a wall 42 having a port 43 controlled by a valve 44 which is normally held seated to close said port by a spring 45 interposed between said valve and a plug 46 which closes an opening in the handle through which said valve is inserted. At the side of the wall 42 toward the cylinder 31 the handle is formed with a port 47 communicating with the atmosphere and disposed in axial alinement with the port 43. The valve 44 is formed with a stem 48 of smaller diameter than the port 47 and extending therethrough, said stem having at its outer end a head 49 constitutinga valve for closing the port 47. The arrangement is such that when the valve 44 is seated, the valve 49 is in position to open the port 47, thereby exhausting the outer end of the cylinder 31 to the atmosphere, and when the stem 48 is depressed to open the 'valve 44 and admit fluid pressure to the cylinder the valve 49 closes the port 47 The combined inlet and exhaust valve 44, 48, 49 is manuall operated as above described to admit flui pressure to the c linder 31 and exhaust the same therefrom y means of a finger lever 50 pivoted at 51 between ears or flan es 52 formed on the upper side of the ban e 36, said lever engaging the end of the, valve between its free end and the pivot 5t, and being extended slightly beyond said pivot, as shown at 53, to engage a stop 54 which as shown comprises a pin carried by the flanges 52 and extending between the same.

In Fig. 1 the parts are shown in the positions occupied by them at the completion of the setting operation and at the beginning of the retraction of the piston and the opening of the jaws. Normally, and with the combined pressure and exhaust valve 44,49 in the position shown, the spring 41 holds thepiston 32 in its outermost position and the jaws open. With the parts in the latter position, the device is applied to a-rivet to be set with the dies 22 and 23 engaging said rivet at opposite sides, and the lever 50 depressed, thereby unseating the valve 44 and causing the valve 49 to close the exhaust port 47 Fluid pressure is thereupon admitted to the outer end of the cylinder 31, moving the piston into the position shown and closing the jaws upon the rivet to set the latter. Thereafter, the lever 50 is releasedto permit the spring 45 to seat the valve 44 and cause the valve 49 to open the exhaust port 47 as shown, whereupon the spring 41'w1ll retract the piston 32 and open the jaws.

In the construction shown in Figs. 1 and 2, the cylinder'31 is disposed with its axis in alinement with the handle 36, and transverse to the path of relative movement of the setting jaws and dies, thereby providing an elongated device which may be conveniently projected into contracted spaces, remote corners, or other relatively inaccessible places.

For some purposes a more compact device may be desirable, and such a device is provided by the construction shown in Figs. 4 and 5 in which the cylinder 310 is disposed with its axis transverse to the supporting handle 36 or parallel to the path of movement of the jaws and dies. In this construction the jaws 200 and 210 are shown as crossing one another at the pivot 24, the cylinder 310 being supported upon and secured by bolts 55 to the extended outer end of the upper jaw 200. The piston 320 in the cylinder 310 is connected by a link 330 with the extended outer end of the lower jaw 210 which projects laterally into the lower end of the cylinder 310. To accommodate this lateral arrangement a plurality of springs 410 are employed in place of the single spring 41 in the form of the invention firstdescribed, said springs being interposed between the piston 320 and the lower cylinder head which is formed by the extended end of the jaw 200. The cylinder 310 has formed in its wall a fluid passage 56 communicating at ope end with the outer end of the interior of the cylinder chamber and at the other with the nipple 39. Also in this construction the operative connections are housed by a lateral extension 57 on the cylinder. The construction shown in Figs; 4 and 5 is otherwise substantially identical with that shown in Figs. 1 and 2 and the operation thereof will be readily understood without further explanation in detail. This construction is claimed generically herein and specifically in a divisional application filed January .15, 1929, Serial No. 332,664.

Having thus described my invention, I claim 1. A portable fastener setting device comprisin a pair of pivoted jaws having at one side 0 the pivot free ends provided with cooperating setting dies, a fluid pressure cylin-l der carried by one of said jaws at the opposite side of the pivot, a piston in said cylinder operatively connected with the other jaw, a supporting handle bey'ond said cylinder, said handle having a pressure fluid passage communicating with one end of said cylinder and a port opening to the atmosphere, a spring interposed between said piston and the opposite end of said cylinder, and a manually operated valve carried by said handle for controlling saidpassage and port.

2. A portable fastener setting device comprising a pair of pivoted jaws having at one side of the pivot free ends provided with cooperating setting dies, a-fluid pressure cylinder carried by one of sa1d jaws at the opposite side of the pivot, a toggle connecting said jaws between said cylinder and the pivot, a piston in said cylinder operatively connected with said toggle, a supporting handle beyond said cylinder, said handlehaving a pressure fluid passage communicating with one end of said cylinder and a port opening to the atmosphere, a spring interposed between said piston and the opposite end of said cylinder, and a manually operated valve carried by said handle for controlling said passage and port.

In testimony whereof I aflix my signature.

OTTO J. GROEHN.

Images