US856159A - Adjustable strut with toggle action. - Google Patents

Description

G. KELLER.

ADJUSTABLE STRUT WITH TOGGLE ACTION. APPLIoATroN FILED Dno.2z,1soe.

PATENTED JUNE 4, 1907,.

2 SHEETS-SHEET 1.

PATENTBD JUNE 4, 1907.

G. KELLER.

ADJUSTABLE STRU'I WITH TOGGLE ACTION.

APPLIUATION FILED DBO. 22, 1908.

'FgJ. jgji.

y2 sums-SHEET 2.

` NITED sTATEs PATENT oEEicE.

GUSTAV KELLER, or EisENAoacERMANY. i

4Meeus-nietssTnuT wiTi-l roes-LE ACTION.

Specication of Letters Patent.

Patented June4, 1907.

Application sied Dcember 22,1906. serial 110.349.160.

To all whom it ,may concern:

Be it known vthatv I, GUsTAv KELLER, manager, a subject of the Duke of Saxe- Meiningen, residing at Eisenach, `Grand Duchy of Saxe-Weimar-Eisenach, German Empire, have invented certain new and useful improvements in or relating to adjustable struts withl toggle action suitable for use in all deep level excavations, more particularly for pits, shafts, and wells, of which the following is a specification.

My invention relates to improvements in or relating to adjustable struts with'toggle action suitable for use in all deep level excavations, more particularly for pits, shafts and wells.

Supports with toggle action are already well known in mining.

It is also no longer .new to use spreading leverswith toggle action for joining separate rail sections on' portable railways. Thesewell known stay and spreading lever devices, however, are not adjustable to the extent absolutely necessary for struts for all deep-level excavations, inore particularlyfor pits, shafts and wells, the so-called canal struts.

The object of the present invention is to produce a canal strut which is adjustable within as wide limits as possible, which can be extended to any desired extent by securing several strut-bars together, and can be placed with one push into the spread-out position, and just as quickly, and without any danger, again detached after the vsecuring device lias been shifted.

Canal struts" as heretofore known, do

noty have the above mentioned advantages,

as they are adjustable merely by means of a spindle withv a right and left-hand screw thread. Canal struts of such construction cannot be secured or detached again from the top by meansof a suitable tool.

This is, however, rendered possible by the canal strut according to the present invention 3 it is, therefore, unnecessary, as wi th the known struts with screw action, to have a irin stand when it is desired to put the strut in, which is an important advantage, for in g i one is provided with a series of holes 6, while the shorter one has two holes 7 and 12 and most cases it is impossible to get such a stand, more particularly in canal building.

But if there be no secure stand when well i known screw struts are put in, then the putting in and the detaching of the struts is exl i i it is constituted by two or more bars of any desired cross section hinged together in a detachable manner by means of pins or the like, and 1n such way that their len th is adjustable Within the widest possib e limits, the strut bars being secured in the operative position by means of an adjustable collar or ring; the adjustment of the length is effected by means of holes arranged at certain intervals.

Several constructions of canal struts" ac cording to the present invention are illustrated by way of example, in the accompanying drawings.

One construction is shown in Figure 1 in elevation, the strut being shown placed between the canal boards without being tightened. Fig. 2 shows the strut in elevation, in stretched position. Fig. 3 is a corresponding plan, and Fig. 4 a cross-section on the line A-B. Fig. 5 is a perspective view of a canal strut with the bars arranged to form a short length, for use when the canal-boards are at a small distance from each other. While in the construction shown in Figs. 1 to 5 the struts are made of two U-shaped bars, the construction shown in Fig.. 6 intended forv smaller canals and easily constructed, comprises av T-shaped bar and two angle irons with their wider webs secured together by means of a flat iron bar placed between them. Figs. 7 and 8 show two other constructions of canalstruts made of U-iron. Fig. 9 is a detail of the canal strut shown in Fig. 8. Fig. 1() is a section on the line C-D through the canal'strut shown in Fig. 11, and constituted by a square beam and a U- iron. The strut shown in Fig. 1.2 is constituted by a round wooden beam and a U-iron. Fig. 13'is. a detail, while Figs. 14 to 18 are sections on the line E-F of different constructional forms of the strut shown in Fig. 12.'

The strut bars 1 and 2 at their ends adjacent to the canal boards 3 and 4 are provided either direct with claws 5a or with shoes 5 having such claws. The bars 1 and 2 are preferably of unequal length, and the longer- IIO f xo means of a cable or chain attached near the pin 8, the canal strut can be brought into the position shown in Figs. 1 and 5, from thecanal top that is to say rpm outside the canal itself, and thus removed'ln a very convenient 4waly and'withoutany danger.

used, one bar 1 is cut out at the hinge end, so that the central web is removed. Owing t0 the shorter bar 1 being provided with two holes-7 the strut can be more easily lengthened and shortened within narrow limits than if the bar 1 were provided with only one hole', l Y

In the event of the' canal strut being still insufficiently long when the boards 3 and 4 to be stayed are at a great distance a art, several bars 1 and 2` can be connecte together into one single strut by means of pins 8 as shown in Fig. 7.

The two outer strut bars 1a and 2b could also A be utili'zedas canal boards, while the bars 1 and 2a and 2 and 1b form a rigid strut, being connected by means of the pin 8, an'd the ring Q ushedover them.v In this vway any desire nuniber of bars 1 and'2 can' be c onvnected to form one single strut, and thus, as the single bars 1 and 2 can be adjusted relatively to' each other, the strut can be adjusted to suit any desired Width pf canal.

` In the construction of the canal strut made of two U-irons 1 and 2, as shown in Fig.- .8, in order to secure the..,strut inthe stretched po.-

sition without the use of a ring 9, the pivoted. end of the U-iron is slightly bent upward and provided with a stop pm 14, so that the strut.

cannot sink downward beyond the stretched 4position after the stop pin -14 has mme to rest i against the bar 2. f

In order to make the strut adhere properly to the canal boards, the free ends of the bars 1 and2 ma be provided, as shown clearly in Fig. 9, Wit detachable shoes 15. yfitting each end of the bar, made of angle iron, secured by means of bent l 16 by screws or the like, and provided wit points 17.

In the construction shown in 11 and 12, one ofthe bars is constituted by a wooden beam of s uare or round cross-section, while the secon bar 2 is constituted by a U'iron.

6o The beams 1 are preferably provided witha head piece 18 made of U-iron, as shown m4 Fig. 13, of which the upwardly bent flap A19 rests against the head of the beam and thus receives the pressure of the stretched strut. 6 5 The head piece 18 is secured to the wooden the canalA vtogether, one -ofsaid bars having' a series of esente beam by bolts 23 and pivoted to the U-iron 2 by means of a pin 8. f To that end, the head piece -18 is provided with several holes 7 arranged close together, enabling the strut to -be lengthened and shortened kw1thinnarrow 7o f When square beamsare used as shown in Fig. 11, thev U-iron 2 preferably overlaps the head'piece 18 as shown in the cross section in Fig. 10. -A cranked head iece (Fig. 17) 75 withthe -Ubar 2 arra d insi e may equally well be employed. en round wooden beams are'used, as shown in' Fig. 12,' the U11 i iron 2 ispreferably .arranged between the side webs of the head piece 18 as shown in Figs. 8o 1g. 5clearly shows that when U-irons' are 14 to 18 which vrepresent various construetions shown in cross section on the line E-F. In the construction shown in Fig. 14 the' head piece is'constituted by a pipe of which one end 20 is pushed over the round beam 15 85 I and secured by means of bolts 23, while lthe othenend vis slit lon 'tudinal1y The lugs 21 thus produced, are ent upward and pivoted by pins 8 to the U-iron 2.

The spread -out position of these canal 9o struts may be Secured by pushing the ring 9 over the two bars, or by means of. a second bolt introduced into the holes 7. .'In order to prevent the rings fromgetting lost, the bars ma be provided at suitable points with stops w ch 1n the case of U-lrons, have the shape of projections, rivet heads or thelike.

In the constructions .shown in cross section in Figs. 15 to 18, the shape ofthe head piece '18 is practicallythe same as in Fig'..1 3 In m: Fig. 15, in order to afford a firm support to the U-iron '2 in stretched osition,1t` wo Hatiron strips 22 are arrang at both sides of the beam 1. In Fig. 16 the'U-iron bar 2 is replaced by a bar 25 of arc-shaped cross section. The firm support for the U-lton 2in stretched position of the strut vcan also be obtained, as shown in Fig. 17 by bendingthe two side lugs of the U-iron 18 at 24, so that' theU-iron 2 can rest on the bent portions.v no

ros

'Fig. 18 shows a very simpleconstruction, in

which the U`iron 2 simply rests on the round wooden beam 1. In'the constructions shown inFigs. 10 to 18, the-bar `2 in stretched position alwa s comes to rest on the bar 1'. n 5

What claimrisr' 'i 1. An adjustable strut with toggle action, comprising .two oppositely facing yoke formed interitting bars detachably pivoted perforations, andthe other having two lseries of prforations, the distance between the perforationsV comprising one of the series 'of the latter bar being one-half. as long as the distance between the perforations `in the former bar, and means for securing the bars together.

2. Anl adjustable strut with toggle action, comprising twov olppositely facing yoke formedinterfttingars detachably pivoted 13o together, one of said-bars having a series of perforations, and the other having two series of perforations, the perforations of `one of the latter series being adapted to registerwith the series of perforations inA the iirst mentioned bar, and means for securing the bars together.

3. An adjustable strut with toggle action,`

' being adapted to register with the series of perforations in the first mentioned bar, and means for seeming the bars together.

4. An adjustable'strut with toggle action, comprising two oppositely facing yoke formed interiitting bars detachably pivoted together', each of said bars bein provided with means whereby a plurality o bars may be connected'thereto to form a single rigid bar.

5. An adjustable strut with toggle action, comprising two oppositely facing yoke formed interfltting bars detachably pivoted together, each of said bars being provided with means whereby a plurality of bars may be connected thereto to form a single rigid bar, one of said bars having a series of perforations, the other having two: series of perforations, the distance between-the perforations comprising one of the series oi the latter bar being one-half as long as the distance between the periorations in the former bar.

6. An adjustable strut with toggle action, comprising two o positely facing yoke formed interitting ars detachably pivoted together, each of said bars being provided with means whereby a plurality of bars may be 'connected thereto to form a single rigid bar, one of said bars having a' series of perforations and the other having two series of perforations, the perforations of one of the atter series bein adapted to register with the series of pe orations in the first mentioned bar. Y

7. An adjustable s trut withtoggle action, comprising two o positely facing yoke formed intertting liars detachably pivoted together, each of said bars beinvprovided with means whereby a plurality o? bars may be connected thereto to form a single rigid bar, one of said bars having a series oi'perforations and the otherhaving 'two series of perforations, each of which is located adjacent the terminals ofthe bar, the perforaengage, one of said bars having a series of' perforationsand. the other having two series oi perforations, the distance between the perforations comprising one of the series of the latter bar being one-half as long as the distance between the perforations in the iormer bar, each of said bars being provided'with means whereby a plurality of bars may be connected thereto to form asingle rigid bar.

9. An adjustable strut with toggle action,

comprising two bars detachably pivoted together, the pivoted end of one bar being bent upwardly and lprovided with a stop pin against which. the other bar is adapted to enage, one of said bars having a series of perorations and the other having two Vseries of erforations, the perforations of one of the atter series bein@ adapted to register with the series of peribrations in the first mentioned bari each of said bars being provided with means whereby a plurality of. bars may be connected thereto to forma single rigid bar. l v

10. An adjustable strut with toggle action, comprising two bars detachablyjplvoted together, the pivoted end 'of one bar being bent' upwardly and provided with a stop pin against which the other bar is adapted to engage, one of said bars having a series of perforatlons and the other having two' series of perforations, each of which is located adjacent the terminal of the bar, the perforations of one oi the-latter series being adapted to register with the series of perforations in the first mentioned bar, each of said bars being provided with means whereby a'plurality of ars may be connected thereto tol form a single rigid bar.

comprising two o positely faclng yoke formed interfitting together, and means for securing the lbars in their adjusted position.

In testimony whereof I haveher'eunto set my handin presence of' two subscribing wi tnesses.

GUsTAv KELLER'.

Witnesses: o

CARL VOLL, ERICH STRELow.

ars detachably pivoted l .105 11.' An adjustable strut with toggle action,

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