US1929245A

US1929245A - Riveting machine

Info

Publication number: US1929245A
Application number: US641827A
Authority: US
Inventors: Maxwell B Harvey
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-11-09
Filing date: 1932-11-09
Publication date: 1933-10-03
Anticipated expiration: 1950-10-03

Description

Oct. 3, 1933. M. B. HARVEY 1,929,245

RIVETING MACHINE Filed Nov. 9, 1932 2 Sheets-Sheet 2 A 1 76A I y J Q) J J J 3" 25 J J J 5 J g 2% U 12 3 -14.

auu' ]fl 22 J 2L1 O a Q J A B 7 ll]? 15 1i i 1) g 6 1 2 K 24 I J a J J 0- M yyJJ 25 '5 J J a J J 2 817 L flaw. 2Z//%,-- O0 22 O O J WITNESSES: I INVENTOR:

TTORNEYS.

Patented Oct. 3, 1933 My-"invention relates to riveting machines; and

I more particularly'to portable machines manually;

in such a machine a comparatively long handle' for eifecting slow movementof the rivet forming diewhile-applying pressure atthe rivet head, in 2Q, combination with a comparatively short handle for eiTec-ting rapid movement of the rivet forming. initial adjustment and for diefor purposes of quick release.

Other objectsa'ndadvantages characteristic of my invention will become more fully apparent from thedescription of one embodiment or"ex-. ample thereof 1 which-follows hereinafter; having reference to the accompanying drawings. Of the.

drawings:

machine of my invention, showing its application to the riveting of wire clamps h v V Fig.'-II'}'represents'anenlarged view of the'uppe'r half of the machine in side elevationywith certain 5 portions shown in cross section, showing'the positions which the parts of the'machine occupypri'or to the'forming of a rivet;

Fig. III-representsa-similar view; showingthe. positions which the'parts occupy afterthe riwetw is formed;

i Fig. I'Vrepresentsan enlarged side elevationof the upper'half of the ratchet wrench of the machine;-

"Fig-iwrepresentsan end elevationof the same 5; with a portion shown in-cross section,- takenv as indicated by the lines V -V of Fig. IV: and f Figs. VI and VII represent perspective viewsof' the stationary and-movablesdies respectively.

With reference to Fig; I of the drawings, there 501 is represented a riveting machine which is par ticularly adapted to the forming of heads on hollow rivets of ductile material for joining together trolley wire clamps. at A, are used for connecting the messenger wires B and contact wires C of the catenary construc- Fig. I represents a perspective view of riveting" Such clamps, designated tion'of'elecirifiedrailways. The: machine isof a portable type which-can be readily operated'by-a single perscn either seated in a'b'oatswains chair suspended from the wire upon which he is work ing; orstanding on an elevated platformradjacenti 6B" to'the wire; Themachine comprises generally: ay'oke frame. 1'; having. thereon a: series lofi handles forperformingdifferent functions. One:han

.dle 2: is rigidly attached to. the.frame,- andwhile. it may take .a' varietyof forms, inthe present in1-- stance this handle is. shown inthev form-.of-c'ai U-shaped member joining the two endsiofithe yokeframe; It. affords a. convenient .gripwby whichtheyoke frame maybeheld inLai horizontal: position. A secondv handle constitutes iairatchet 7Q? wrench-31am is relativelylong. Aathirdtihandler. 4.:is; in the: formofa crankzarmiand-is relatively; short; The: ratchet: wrench is interposed-aheatween; the crank. handle 24 and: one; arm; of the:

rigidihandle The yokeframe 1.has at one: end;,5.' a. sta tionary. die. 6 :whichthough. removable :is inserted in such manner-that it cannot rotate. Therstaationaryg-die. 6, ShOWIl'ilIl perspectivecin Fig;=.VI, serves toenter the preformed; end I of a\ hollow 3w rivet D'ancl tohold; the; same against rotation while the;opposite-;;end;.is being formed; Within; the other'end..7 of: the yokeiframe; there-51s a. spindle: 8. which 'removably. has fitted. thereto: a. head'formingdie 9. The head forming ,:die,a35.--. which is shown in: perspective. in: Fig; VII; isa disposed; in opposite relation to: the; stationary; die- 6 ands serves: to {expand the. unformediemt of the.rivet Daby; an combined rotary and transsf latorymovement-.1 To impart; this movementnto: 90.; the head-forming'die 9, the spindlet8zis in the.- form of a screw turning in; ball. bearings 101' withinthe cylindrical opening at thev end ;'7 of the yoke frame; 1; The; spindle ..8-. has. 'a portion:

11 projecting outward beyond' -the'zyoke framed; 9592-;

On this portion '11 of Z'thetspindle 8'-there.-'is an the head 16 of the ratchet wrench 3 there is lost;

a pawl 18 normally urged by a spring 19 into engagement with the teeth 20 of the ratchet wheel 17 as clearly shown in Fig. V. The ratchet wrench 3 is of the single-acting type, and when moved back and forth operates the spindle 8 1111* in such manner as to move the head forming die 9 towards the stationary die 6.

For the purpose of releasing the head forming die 9 after the rivet is formed, the ratchet wrench 3 hasthereon means for holding the pawl 18 in inoperative position, Such means comprise a trigger or knob 21 which penetrates through a slot 22 in the head 16 as shown in Fig. IV. By pressing the knob or trigger 21 downward and moving it laterally into a recess 23' at one side of the slot 22 the pawl 18 is. withdrawn from the ratchet wheel 17. In this manner the pawl 18 may be locked against the pressure of the spring 19 to maintain the ratchet wrench 3 in a neutral position.

As shown in Figs. II and III, the crank handle 4 includes a nut portion 24 of hexagonal shape which fits within the outer halfof the socket 14 of the ratchet wheel 1'7. The nut portion 24 of the crank handle 4 is secured to the nut the s'pin dle by the collar 12 on the one side and by an annular flange 26 of the crankhandle 4 on the other side. Moreover, it will be apparent that the crank handle 4 turns with the ratchet wheel 17. With the ratchet wrench 3 in neutral-position, however, the crank handle 4 can be operated without causing the: parts of the ratchet wrench, other than the ratchet wheel 17, to turn. g

The operation of the above described riveting machine is as follows. Assuming that theratchet wrench 3 is in neutral position, that the operator is about to form the head of a rivet, and that the head forming die 9 is spaced apart from.

the non-rotating die 6-, the operator proceeds to carry the yoke frame to a position' in which its opposite dies will straddle the parts to be riveted, this position being represented in'Fig. II. With one hand he grips the rigid handle 2 and with the other hand he turns the crank handle 4 to'bring the head forming die 9 into. engagement-with the unformed endof the rivet while the preformed rivet head is seated on the stationary die 6. Thereupon', he moves the knob or trigger 21' laterally acrossthe head 16 of the ratchet wrench 3 which permits'the' pawl- 18,"under the influence" of the spring 19, to be urged into engagement with the ratchet teeth 20. By a back andforth'movement of the ratchet wrench 3, the spindle 8-and its head forming die are urged forward with a screw motion. The

I, ratchet wrenchf 3 affords a comparatively long' arm so that ample pressure may be applied at the head forming die. 7

When the-head of the rivet has been expanded, the ratchet wrench 3 is returned to neutral po sition by adownwardand outward movement of the knob or trigger 21. With the ratchet wrench 3 neutral position; the crank handle 4 is .turned in such a direction as, to release the head forming die 9. from its rivet. Further movementof'the crank handle 4 returns the head forming die 9 to a position in which it is fully separated from the non-rotating die 6.

Inas-' much as the crank handle 4 affords a relatively short arm, it will be apparent that the release of the head forming die 9, as well as its initial adjustment preparatory to forming a rivet, may be quickly effected.

While I have described one example or embodiment of my invention showing a specific form which'the invention may take, it will be apparent that various changes may be made in the form of the apparatus herein described and illustrated without departing from the spirit of my invention as defined in the claims hereto annexed.

Having thus described my invention, I claim: I; In a riveting machine, a yoke frame, a fixed die at one end of said frame, a screw at the other end of said frame having thereon a head forming die, a relatively long arm on said screw for effecting slow movement of said screw to apply pressure at saidhead forming die, and a relativelyshort crank arm for effecting rapid movement of said screw.

2. In a riveting machine, a yoke frame, a die atone end of said frame adapted to hold a preformed end of a rivet against rotation, a screw at the other end of said frame having thereon a head forming die, a relatively long arm on said screw for effecting slow movement of saidscrew to apply pressure at saidhead forming die, and a relatively short crank arm for eifecting'rapid movement of said screw.

3. In a riveting machine, a yoke frame, a nonrotating die at one end of said frame, a screw at the other end'of said frame having'thereon a head forming die, a crank arm on said screwfor.

ing die on the inner end of said spindle, a crank.

arm on said outwardly projecting portion of the spindle, and a ratchet wrench interposed between said crank arm and said yoke frame.

5. In a portable riveting machine, a yoke, frame having a handle thereon whereby the frame may be conveniently held in a horizontal position, a

non-rotating die at one end of said frame, a spindle at the other endof said frame having thereon a head forming die, a relatively long vertically disposed ratchet wrench on said spindle, and a relatively short crankarm on said spindle adja-- cent to said ratchet handle;

6. In a portable riveting machine, a yoke frame having a U-shaped handlev joining the two ends of the frame whereby the, frame may be conveniently held in a'horizontal position, a non-rotating die at one end of said frame, a spindle atthe other end of said framehaving thereon a head forming die opposite said non-rotating die and having a portion projecting outwardly beyond said frame, a relatively. short crank arm on said outwardlyprojecting portion of the spindle, and a vertically disposed ratchet wrench between said crank handle and said yoke frame.

1 MAXWELL B.