US1793561A - Screw clamp - Google Patents

Description

A. SCHMIEDER SCREW CLAMP Feb. 24, 1931.

Filed-Jan. -18 0 e I O (E ma M E 0 M m d m 04% n 6 Patented Fat; 24, 1931 f J N D S A I ALFRED scnmmnnn, or masrn'rmnnwvonx V 1 scR Ew'cLA r c p 1 Application ma January 18, 1930 fSeria1 No. 421,659,

- My'invention relates to improvements in ineans for clamping parts in position to facilita te the securement or working thereof, such j as in the art of woodworking'and'the same 5'ha's'for its objecttoprovide a simple,-efficient a and reliable device which is readily manipulated and secured in position to exert a clamping action alonga plurality of lines of direc- V tion or at a plurality of points. '1'. Another object'of the invention is tocprovide a device of the character specified in which certain of the clamping components thereof are capable of being relatively moved to exert conjointly a third clamping action 5 along a line of direction extending trans- 'j'versely relative to the lines ofdirection of -said clamping component's.

Another object of the inventionis to pro- 'vide adevice of the' character specifiedin '2 which an attachment l may be readily connect'edv to'a pair .of clamps for causing posi- *tive movement thereof towards each other to z exert fat-clamping action'along a line 'of directionextending transversely relative to the 7 i lines of dire'ction of the-individual clamps.

Qther'objects will in partbe obvious and f Referring to the drawing the clamping [means-includes apairof clamps 1 0 and 12, Y

eachcomprising a standard 14 having a lower arm '16 secured thereon andupper' arm '18 slidable thereon. The outer end'r of lower arm 1 6 is provided with a universally c swiveled abutment 20 adapted to-engage a piece or member to be clamped and the outer end of the upper arm 18 is provided with a screw 22 threaded therethrough and having I a universally swiveled abutment 24 cooperating with the abutment 20. The two clamps J 10 and 12 are substantially'alike in construction. a "The clamps 10 and 12 are connected to- Fig. 4 is-a sectionon the line of Fig. 2.-

actuating screw. i

gether. means 26" for moving the clamps towardeach other toconjointly exert a clampngaction along a transverselline'g l The con-v necting' means 26 includes a pair'o'flarms 28 I and 30 preferablyiprovid ed with hooklike" orslotted endportions 32 and 34 adapted to J SA-TENF OFFICE q embracethe standards 14 to extend laterally towards each other and secured to thestandards bytlie set screws 36; Themembers 28 and 30"are pivoted together at their inner" ends as indicated at 3 I v Each member32 and 34 is provided with a pair of rearwardlyextending ears or brackets 40 between which are swiveled the nuts 42 and 44 u pon vertical axes. A threaded actu ating member 46 meshes with thenuts 42land 44, the1n e n'r1ber 46 comprisingjpreferab ly left I a 7 threads as indicated at- 48 and 50' so that the device may bemore hand 'alidright hand quickly clamped by mea'nsdof the crank 52."

The 'abutments 20' and 24 are preferably roughened or ribbed as indicated at 54'to'preduring the transverse clamping action.

; In operation, the actuating means 26 are readily secured to the clamping components c10 and 12 by engaging the slotted portions 32 and 34 with the standardsl4 andsecuri'ng the "vent the clampfrom slipping over the work same by set screws 36fafter being slidably adj ustedthereon. The clamping components 10 and 12'are then engaged with the pieces of work by adjustment of thescrews 22. By rotating thescrew '46 the clamping compo- ,nents 10 and 12 move towards each other on pivot 38 withoutdanger of slipping relative to the work toeXjert a third clamping action along a transverse line and cause the pieces to be firmly pressed into'engagement with each ,otheratthe contiguous edges thereof.

In myc'inve'ntion the clamping components 10' and 12 therefore form conjointly a third clamping component,,thereb-y rendering the device more universal and flexibleand enlarging the usefulness thereof. i I

Further, the clamping components'1O and 12 are connected by a plurality of parallel connections, one ofwhich is pivotal and the otherof which is the transversely extending Mydevice may be readily manipulated and ,l argedrange of useiulness, andparticnlarly in connection with the fabrication of veneered g g of various joints, and the 7 working upon curvedsnriiace;v

Having thus described my 1nvention what 1. A deviceof the character'described com:

prising a pairof clamps including standards and. relatively adjustable clamping members thereon, members slidably adjlustablevlongitudinally of saidstandards, eachhavingrearwardly and laterally extending arms, the lateral arms being pivotally connected together at the contiguous endsthereofland means'co- 7 operating with. the rearward arms for swinging said clamps relative to each other.

2. A device of the character described com prising a pair ofclamps including, standards, arms relatively slidable on said, standards, and clamping. members at the, outer ends of said arms relatively adjustable thereon, laterally and rearwardly. extending; arms on each standard betweensaid arms, the lateral arms being pivoted together at the contiguous ends thereof, and means coactingwith the rear arms Vfor f'swingin'gsaid'clamps about the pivot. v V 3. A device ofthe character described comprising a pair of clamps including standards, arms relatively slidable on said standards, and clampingjmembers at the outer ends of said arms andLrelativeI-yadjustable thereon, and an attachment for connecting-said clamps for pivoted movement, including portions slidably engaging the standards for adj ,ustment longitudinally thereof, arms extending laterally fromsaid portions towards each other and pi'votally connectediat the contiguous ends, arms extending 'rearwardly from said portions, and meanscoactingthere with for swinging said clamps.

4. A device of the character described com-,

prising an attachment for swinging clamps towards each other to exert a third clamplng action including a. pa1r of members, eachhaving angularly disposed arms, and a portion intermediate said arms, said portions being adapted to engage the standardsof the clamps for sliding adjustment longitudinally thereof, certain of said arms extending towards each other and pivotally' connected, and

means coacting with the remaining arms for swinging said members: relative to each other. 1 5. A device of the character described comprising apair of clamps including standards,

slotted members on said standards, each having rearwardly and laterally extending arms,

I claim and desire to secure by Letters'Pateiit a 1s the lateral arms being pivotally connected together at the contiguous ends thereof, swiveled members carried by the rearward arms, and an actuating screw connecting said swiveled members and meshing with certain of said swiveled members.

6. A device of the character described comprising a pair of clamps including standards, slotted portions detachably engaging said standards and each having rearwardly and. laterally extending arms, the lateral arms being pivotally connected together,

swiveled nuts carried by the rearward arms,

andan actuating screw having reversely di rected threaded portions meshing with said nuts. I

7;; A device of the? character described comprising a pair. of members having slotted portions for. slidably engaging the standards ofa pair of clamps for adjnstmentv longi tndinallv of the standards,;arms extendinglaterally from said slottedportions and connected together for pivotal movement, rearwardly extending brackets on said slotted. portions, swiveled members on said brackets, and a threaded actuating, member connecting said swiveled'. members and meshingwith certain ;,of saidswiveled members.

8; A device of the. character described comprising a pairof clamps including stand-v ards and relatively-adj ,ustable clamping members thereon, and members slidably-adjnstr able. longitudinally of said standards, each member having lateral portionsand portions rearwardly ther'seoflthe'portions of one. set

being connected together for pivotal move: ment, and the portions oi the other set having an actuating connection therebetween,

- 9,, A device of the character described comprising, a. pairofclamps including standards,. arms relatively-slidable on. said standards, and clamping members at theouter endsv of said arms relatively adjustable thereon, and lateral andrearward' portions on. each standard betweensaid arms, the portionsof; one-set being connected together for'pivotal movement, and-portions of theother set having an actuatingconnection therebetween.

10. A device of the. character described comprising a pair 0t clamps includingstand-e ards, arms relatively slidable on said standards, and clampingmembers at the outer ends of said arms andrelatively adjustable there on, and an attachment for connecting said clamps ffor pivotal movement, including: members slidably engaging the standards for adjustment longitudinally thereof, and portions projecting laterally and rearwardly from said last. named members, the projecting portions of one set being connected to-::

gether for pivotal movement, and the portions of the other set having an actuating connection therebetween,

11. A device of the character described comprising a pair of clamps includingstand- I ards and clampingmembers slidably engaging said standards, and an actuating attache 'ment including portions slidably engaging said standards for adjustment thereonrela- Y tive to said clamping members, spacing means 1 pivotally connecting said portions, and an actuating connection between said portlons in spaced relation to said spacing means.

a members, and an actuating connection be- V spaced relatlon to said a 12. A device of the character described comprising an attachment for swinging clamps towards each other to exert a third clamping action including members adapted to engage the standards of the clamps for sliding adjustment longitudinally thereof, spacing means pivotally connecting said tween said members in spacing means.

13. A device of the character described comprising an attachment for swinging clamps towards each other for exerting a third clamping action, including members adapted to engage the standards of the clamps for sliding adj ustment'longitudinally thereof, portions thereon pivotally connecting said members,- other portions thereon in spaced relation to the first named portions, and an actuating connection between said last named portions.

In testimony whereof, I have signed my I 7 name hereto.

ALFRED SOHMIEDER.

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