US875389A - Adjustable bearing. - Google Patents

Description

lo. 375,389. 3. THEBDE.

ADJUSTABLE BEAPNG.

APPLICATION FILED .TUL' 3.1. 1907.

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PATENTED DEG. 31, 190?. N. J. THEEDE.

ADJUSTABLE BEARING.

APPLUAT-ION FILED JULY 1l. 1907.

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v 514110144501 'WW1/Lama@ I f CTI NICHOLAS J. THEDE, OF FAlRMOUNT, NORTH DAKGTA.

ADJUSTABLE BEARXNG.

' specification or Letters Parc-ni.

Patented Bec. 3l,

Application filed July ll. 1907. Serial No. 383.233.

To all whom it may concern:

Be it known that l, NICHOLAS J. Tnnnnn, a citizen of the United States, residing at Fairmount, in the county of Richland, State of North Dakota, have invented certain new and useful Improvements in Adjustable Bearings; and l do hereby declare the following to be a full, clear, and exact .description of the invention, such as will enable others tion, like characters o' reference designating similar parts throughout the several views, wherein Figure l is a plan view of an endless elevator canvas showing the application thereto of the improvements comprehended in the present invention. Fig. 2 is aside elevation of such canvas showing theframe construction therefor. Fig. i@ is a rsection taken longitudinally through the" canvas shouing the adjustable movable arms which carry the upper rollers of the canvas. Fig. 4 is a detailed view showing the construction of such arms and the niannerof engaging the same with' a threaded adjusting shaft. Fig. 5 is a section on the-line 5 5 of Fig. 4.

Referring specifically to the accompanying drawings, there is' shown a frame comrising the side bars 6, and a connecting end ar 7. The side bars 6,' at their rear ends are formed with angular recesses 8, in which are disposed the projecting trunnions S) of upper and. lower rollers 10 and l1, over which the canvas l2 is trained. yThe side bars`6 are likewise formed adjacent their front ends with angular recesses 1'3, which communicate with longitudinal slots. ll'. Threaded through collars 2O in the ends of the bai' 7, are shafts l5 which are formed with threads 16 of steep pitch and which, on their projecting outer ends carry sprocket wheels'l'. A chain 1S is trained over the slots ex latterjandione'fofjthe shafts l5 has its end i said recesses, a

formed to receive a crank handle i?, by means of which said chain and said shafts are driven. Surrounding each of the shafts is a V -shaped member having diverging ar= 22, the said member bearing against a swivei head 2l provided at the end or the shait T he arms 22 are connected by an integral reinforcing web and at their inner ends lil connection with the boxes 23, the latter' be e5 ipg formed to receive the projecting trun-r nions 24 of upper and lower rollers Z5 and 26. ,'lihe belt l2 is likewise trained over the ruilm ers 25 and 26.

it will be apparent that.v by rot-ating the crank handle '19, in the proper directiondesired, to correspondingly. rotate the sha'ts 15, that the boxes 23 will be moved iongi tudinally with relation to the side and in suoli movement, will carry the rollers 25 and 26 by means of the connections described, to take `up or let out the slack of ''.he belt i2 as desired. l

The invention is simple in itsV structurai details, inexpensive to manufacture, and practical and eiiicient in use.

From the foregoing 'description seen that simple and eiiicient ine' vided for, accomplishing the o? invention, but while the eiemein shown and ydescribed are wellv ada serve the functions set forth it that various minor changes mai the proportions, shape and the several parts, without de' ariing in the spirit and scope of the invention astefined in the appended claims.

That is claimed is:

'1. The combination with side b nesting cross bar, aroller support ii-l arily between said side bars and, relier.. supported between said' side hars and having adjustable inovc t, oi a threaded shalt, a collar' in said cross ar surrounding said shaft, a ii-shaped member having dive .iig arms formed to surroui'id the ends of said pliers. said shaft passing through the een tral portion of said V-shaped member and having a head bearing against the inner face of said centi-:il portion and means for roating said shaft.

2. ln a. mechanism of the type set forth, side bars formed a ing ends with recesses f upg l()\\'@l` F CED CJi

.rom 'the inner por-ions pair of roilers having m'unnons adapted to be introduced uil-o said sots thzjough said recesses 'and means im Ld-- ustaby moving said olezs in said slots.

3Q n a mechanism of v#ne type 4set fmxthf side bays o'rmed;A @sich end thereof Wi't'l 'ecessea axtandg from -he uppe and ow'er edges and with sots extending for- Wardy from the imm/1" pmicn ofsa we @seas mlers mounted. ifi airs at the ends o? Said Side; mars @md h'ng (md trunnicns gouzned m smd swig-and mtloduced there* ini-o tuough said recesses, an endsss beh m esimou whereof, E affix my' Signature,

in p'eenfe of twg Witnesses.

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