USRE11495E - Speed-pulley - Google Patents

Description

w. M. M clNTYRE.

SPEED PULLEY- No. 11,495. Reissued m 14, 1895-;

1 fUNi-TE D STATES PATENT/Q." OFFICE;

p a citizen of the United States, and a resident WI LIA M. MCILITYRE, OF BRADDQOK;PENNSYLVANIA.V

sPE'Eo-PuLLi-iY.

- srncrmca'rrolv forming erm Reissued Letters rate-a No.1 1,495, dated May 14, 1895..

Original No. 510,283, dated December 5,

" To all whom it may concern.- Be it known that I, WILLIAM M. MCINTYRE,

of Braddocktownship,"county of Allegheny,

and State of Pennsylvania, have invented certain new and useful Improvements in Speed- 107 skilled in the art Pulleys; and I do hereby declare that the'following is a full, clear, and exact description of the invention,.which-will enable others to which'it appertains to make and use the same,reference' being had to the accompanying drawings, which form" a part of this specification.

y My invention relates to improvements in t 5 what are known as speed pulleys, by which 'varyiug rates of speed maybe communicated with a given rate of motion of'the shaft with which the pulley is connected;

The object of the invention is to providean 2o improved device of the above characterwhich 0 ,forshifting' the slidable be required,

shall possess superior advantages with respect to efliciency in operation.

The invention consists in the novel constr-uction and cornbination'of parts-hereinafter fully describedand claimed. In the accompanying drawings,Figure 1 is a side elevation showingtwo pulleys constructed in accordance with my invention con: nected together by a beltand showing means parts of the pulleys. Fig.2 is a'similar view looking from the opposite side. Fig; 3is a cross-section on line a at, Fig. -1. Fig. 4 is a detail perspective view of one of the pulleys and its shaft.

y In the said drawings the reference numeral 1 designates a driving shaftjormed with-a numberof-equi-distan-t horizontal gro'oves 2; This shaft is journaled in the-frame of. a machine, or in the standards or hahgers,'asmay In the present instance it is shown as having its bearings in-standards 3. Fixed to the'shaft is aseriesi of triangular shaped segments 4, with alternatinggspaces 5,

' which register with grooves in the shaft. Lo.-

cated in the grooves in the shaft are slides5,

provided with similar segments 6. There are thus formed two cone shaped parts, divided into sections, directions, '50 slidable in 0rpa t- 1 Located below the shaft 1 ,1'sa similar shaft .the cones pointing in opposite and the segments of one fitting and a supporting bar 16,

to the right, causing the standard 14 to be driving pulley.

the spaces between the other cone 1893. Application'for reissue filed April 12, 1895- Serial No. 545,545-

'7, having horizontal grooves 8. Fixed to this shaft are segments 9,-forming a cone similar to that above described, and in the grooves in segments 12, arranged to slide in the spaces between the segments 9. -The two pulleys above described are connected by a belt 13.

. One end of each of the slides 5 and 10, is connected with or secured to a standard 14.

This standard has apertures near each end" I through which the-said shafts pass and is hori? zonta'lly slidable or movable thereon. Se-. 5

guide; rods 15, and which pass through holes in one of the standards 3, and are connected together 'by'a'loar'17.

cured tothis standard are Pivoted to'th-e machine frameor base 18, is

alever 19, provided intermediate of its ends with arms 20, which embrace the belt 13. To thnipper end of this lever is pivoted one'end of a connecting bar, 21, the other end of-which is pivotally connected with the sliding stand- 'ard 14;.

The ,outer endsof the movable segments are connected by a'band 23. I The operation will be readily understood.

.When it is desired to vary the speed of the driven pulley,'the lever. 19 is moved to the 8o. 14, which in turn will move the cones comprising the'p'ulleys in ;0r out.

right or left,'which will actuate the standard stance, it is'desired to increase the speed of the driven pulley, the lever, Fig. 1, is turned moved outward or away from the cones, and

the slides 10' to be correspondingly moved,

thereby increasing the circumference of the. At the same time the slidesof. the lower pulley will be operated to de-' crease the circumference of this pulley. To

accomplish this object it is necessary that the points of .the sliding segments. of one shaft should point in a direction opposite to the points of the segmentsof this construction, although the slides of shafts move in the both same direction, yet the circ'umference 'off one pulley will be increased, while the other is decreased, and vice versa. 'It-will be seen that this reversed arrangement I03 of the sliding segments is.-v'eryess'ential to V the successful operation ofthe pulley as it provides for the perfect alignmentof thebelt/ and of the pulleys witheachother regardless the shaft fit and work slides 10, provided-with Supposing, for'in-- the other shaft. By 9 5 other, in which case the belt 7 is also very necessary of the adjustment made, and there is no change in the tension on the belt as would occur were the sliding sections in line with each be thrown out of -line on each adjustment of the parts of the pulleys and the tension on the belt be varied to.a corresponding degree. "R

that the segments so interlock as to form a continuous bearing surface for the belt in-order to maintain the same tension at all times, which would necessarily vary with segments having spaces between varying in width.

Having thus described my invention, what I claim is 1. A speed varying device consisting of two pulleys, each of said pulleys comprising two interlocking parts,one fixed and the other slidable, in each pulley, said slidable parts being reversely arranged nection belt, substantially as described.

2. A speed varying device consisting of two pulleys each comprising two interlocking parts, one fixed and the other slidable, in each pulley, said slidable parts being reverselyar-' ranged to each other;a slidable standard, connections from said standard to each ofthe bearings would slidable parts of the pulleys operating means 'for the said. standard, and a connecting belt,

substantially as 'described.

3. The combination with with a series'of' horizontal grooves, and one series of segments secured to said shaft with spaces between aligned with the grooves in the shat't,'of the slides fittingin said grooves and provided with another series of segments working in" said spaces, substantially as described.

4. The combination with horizontal grooves therein, the segments fixed to said shafts/the oppositely arranged movto each other and a'conable segments, the slides fitti n'gin saidgrooves -with which said movable segments are connected,forrnin g upper and lower pulleys, and the belt connecting said pulleys, of the horizontal movable standard to which said slides are secured, the guide rods and supporting bar, the lever, the shifting arms, and the con necting bar, substantially as described."

WI LIAM M. MoINTYRE.

Witnesses:

JNo. KENNEDY, J ESS EJIILL.

the shafts having r 3' a shaft formed

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