US1194610A - Assighob op oete-teibd to williica h - Google Patents

Description

A. FISCHER.

SIGN STBETCHER APPLICATION msn Nov. 10,'19l5.

1,51'. QG, 'I Patented l5,

30 the signs to be changed when desired.

ABRAHAM.' FISCHER, QF 'HILLSBORQ KANSAS, SSIGNOR 0F ONE-Tltl) TO "iTlLII Il?. WALT AND (PNE-THIRD TO PETER P. BARKMAN, BOTH GF HILLSBLG, .i

sion-simmetrica.

Specification of Letters Patent.

Patented To all lwhom t may concern:

Be it known that I, ABRAHAM FISCHER, a citizen of the United States, residing at Hillsboro, in the county of Marion and State of Kansas, have invented certain new and useful Improvements in Sign-Stretchers, of

which the following is a specification, reference being had to the accompanying drawin s.

gilly invention relates to devices for stretching signs or for cognate purposes, and the general object of my invention is to provide a very simple, convenient, easily operated and eiective device of this character by W ich a sign or sheet of iieXible material may. e stretched and held in a taut or stretched condition.

A further object of the invention is to provide a Idevice which is adapted to hold two signs or two sheets of flexible material in parallel relation and in a stretched condition.

Still another object is to provide means whereby the sheet of flexible material conf taining the sign may be stretched both longitudinally and laterally, and VIstill another! object is to provide means whereby the sheet containing the sign may be readily attached to or removed from the stretcher without in any way marring the sheet, thus permitting Other. objects will appear in the course of the Ifollowingdescription.

My invention-is illustrated in the accompanying drawings, wherein:

Figure l is a face view oi my improved sign stretcher, partly in section, and show- .ing the device in operation; Fig. 2 is a top plan view of the construction shown in Fig. l, the nut 9 being removed; Fig. 3 is an enlarged fragmentary plan View of the end of one of the strips showingthe gripping devices, the plate 22 being partly in section;

- Fig. 4e is a lsection on the line fle-4: of Fig. 3;

Fig. 5 is a section on the line 5-5 of Fig. "3; Fig. 6 is a top plan view ci" the supporting bracket; Fig. 7 is aA fragmentary view, partly in section, of the upper end .of the section 2.; and Fig. 8 is a like view 'pf the lower end of the section 3. i

Referring to these figures it will he seen that my improved sign stretcher com` a telescopic stretcher bar composed l tubular section 2 and the inserted'longitu nally shiftable section. 3. These sect' and 3 are preferably in the Ytorni though not necessarily so, the section 3 contained in the section 2. The is provided with a plurality of ratchet teeth l and the section 2 is provided with a 5 which will engage with the teeth nd will hold the section 3 in any longitndira v adjusted relation to the section 2 the elasticity of the sign supported in the spreader. This pawl 5 is shown as pivoted to the section 2, projecting through a slot and as having its outer end beyond the pivot greater in weight than its inner end so that it will normally occupy a position where will engage with the `teeth fl. When it is desired to release the pawl it is only neces sary to press inward upon the projecting end of the pawl which will release it from the teeth a. A vbracket 6' or other supporting member is mounted upon the section 2. s illustrated this bracket is composed of two members together embracing the 4section 2 and adapted to be engaged with any suit able support, the sections of the bracket being held together by bolts so that :the bracket may be lamped tightly upon the section 2. its upper end the section 2 is formed with a square shank 7 and beyond this square shank with a screw' threaded portion 8 adapted for engagement by a nut 9. The lower end of the section 2 is likewise formed with a square portion 10 and a screw threaded portion l1 adapted to be engaged by a' nut 12.

Mounted upon the opposite ends oi 'the sections 2 and 3 are the resilient semicircu.- lar strips 13. These strips are alike in form. Each strip is somewhat resilient and' at its center is provided with a square Aopening for the reception of the square shank oi? the respective sections. Eachstrip constitutes a pair of arms yieldably (':onnected to the corresponding section ci the .stretcher bar,

'each freely movable with relation to each strip in divergent relation and at more than bar. The strip 13 at its extremities is so formed as to provide means for gripping two flexible sheets or signs designated generally A. To this end each extremity of each oi. the strips 13 is downwardly bent, as at 14, and then inwardly bent as at 15. This inwardly bent extremity 15 has the upwardly projecting ears 16 on each side w ose ends are inwardly bent, as at 17, to extend beneath the extremity of the strip 13 and be riveted thereto by the rivets 18. This provides at each end of the strips the side plates 16. Extendingacross the end 14 of each strip is a plate 19 which is riveted thereto and provided with the inwardly curved and rearwardly projecting resilient ears 20. These ears normally bear resilieiitly against the confronting plates 16 but may be forced inward and into gripping relation with the plate 16, as by means of an angular lever 21 which is disposed through a slot in the corresponding end of a plate 22 which is likewise riveted'across the face of the end portion 14. It will be seen that when the levers 21 are turned tothe position shown on the upper side of Fig.2, the spring ears 20 will be released, but when the lever 'is turned to the position shown on the lower side of Fig. 2, the spring ears will be turned inward into gripping relation'to the plate 16 and the corner of the sign engaged by such spring ears will be firmly gripped and` held. i

The operation of this invention is obvious from what has gone before. Primarily, as before stated, this invention is designed for the purposes of stretching signs which' are painted upon canvas or other flexible material. T he corners of the sign are inserted beneath the spring ears 20 and the levers 21 turned down to clamp the sign u ly in place. The members 2 and 3 are shifted longitudinally outward relative ch other, and as this is done the resilstrips 13 tend to Hatten, forcing the of the sign not only outward but y, thus stretching the sign evenly n all directions sothat the sign is held `.For the purpose of permitie ready pulling down of the member itiativc to the member 2, which last meinber is supported by means of the bracket 6, i attach to the extremity of the member 3 the handle 23 having an eye for the insertion oi a linger of the operator. It will be that when the members 2 and 3 are shifted away iroin each other the pawl will hplc. .7 members in their shifted position and will not let lthe contraction of the sign ycause the contraction of the stretcher.

; thereto as it is obvious that many changes might be made in these details without in any way departing from the spirit of my invention as claimed.

Having thus described the invention, what I claim is:

1. A stretcher of the character described comprising a supporting member, oppositely bowed resilient end members attached to options, each end member consisting of two divergent arms resiliently held in divergent relation and against movement into a position of alinement, each of said arms being movable relative to the supporting member.

3. In a stretchei' of the character described, longitudinally adjustable stretchei' sections, oppositely bowed resilient end members mounted each upon an end of one of the sections, the end members when so disposed being in oppositely bowed relation, latching. means holding the stretcher sections in adjusted position and normally preventing their collapse, and means upon the extremity of the end members for gripping the corners of an article to be stretched.

4. A stretcher of the character described comprising a tubular stretcher section and astretoher section having telescopic relation to the tubular section, said last named section being formed with ratchet teeth, a pawl carried by the tubular section andengaging said ratchet teeth, a support operatively connected to the tubular section, end members attached each to the outer end of one of said stretcher sections, each member consisting oi a resilient bowed strip, the arms .of one strip extending in a divergent rela- -ient ears extending over said walls, a lever supporting member having portions projecting over the ears, and levers mounted in said lever supporting member and engageable with said ears to hold them closed.

6. In a stretcher of the character described, longitudinally expansible stretcher members? all atemly adjustable sme'hr membes cared by 5ml ongumjy am pansble members m auch including dive? gem ,uN-w, @zich of Said arms oauch stretchy? n1 @L Telai-ion im 15h@ s/eiche? secgmn E50 which it is ntachad, said. mms being normajy xslf in vcgent relation and. rfa more @than :zu

Images