US2692474A - Carrier for band-tensioning pulleys - Google Patents

Carrier for band-tensioning pulleys Download PDF

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Publication number
US2692474A
US2692474A US192184A US19218450A US2692474A US 2692474 A US2692474 A US 2692474A US 192184 A US192184 A US 192184A US 19218450 A US19218450 A US 19218450A US 2692474 A US2692474 A US 2692474A
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carrier
carrier member
band
axis
pulley
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US192184A
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Rogner Ernst
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SKF GmbH
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SKF Kugellagerfabriken GmbH
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/24—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles
    • D01H1/241—Driving or stopping arrangements for twisting or spinning arrangements, e.g. spindles driven by belt

Definitions

  • the present invention relates to a device for guiding and tensioning a band, more particularly in textile machines.
  • the invention comprises in its broadest aspect a pulley for guiding the band, an elongated carrier member having a resilient portion, first attaching means attaching the pulley to one end of the elongated carrier member rotatably relative to the same, a support member, second attaching means attaching the elongated carrier member in the region of the other end thereof to the support member turnably about an axis being parallel to the axis of turning of the pulley, and tensioning means permanently tending to turn the elongated carrier member together with the pulley about the second attaching means relative to the support member.
  • a weight acts on the resilient carrying member for moving the same into band-tensioning position.
  • resilient means are arranged between the support and the carrying member for moving the same into band-tensiom'ng position.
  • the support has a circular .crosssection and a stirrup connected to the carrier member has prongs embracing the circular support.
  • the support having a circular cross-section is provided with two holes being parallel to each other and in axial alignment and a stirrup-like member having ends arranged in the hole embraces with its mid-portion the carrier member while a helical spring wound around the support has an end acting upon the stirrup-like member and the carrier member so as to move the same into bandtensioning position.
  • the pulley is connected to a U-shaped strip by means of a bevelled intermediate portion connected with the smaller end face thereof to one end of the strip so that the ends of the U- shaped strip delimit wedge-formed spaces for .catching the band.
  • Fig. l is a side elevation partly in section of a first embodiment of a carrier for the tensioning pulley
  • Fig. 2 is a plan view partly in section of the middle portion of the device shown in Fig. 1;
  • Fig. 3 is a side elevation partly in section of another embodiment of the carrier, only the lower part of the same being shown;
  • Fig. 4 is a plan view partly in section of the device shown in Fig. 3;
  • Figs. 5 and 6 are a side elevation and a plan view, respectively, partly in section, of a further embodiment of a carrier for the band-tensioning pulley, only the lower part of the carrier being shown;
  • Fig. 7 is a front elevation of a still further embodiment of a carrier for the band-tensioning pulley, only the middle portion .of the carrier being shown;
  • Fig. 8 is a section along the line 18-8 of Fig. 7;
  • Fig. 9 is a side elevation partly in section of the device shown in Fig. 7;
  • Figs. 10, 11 and 12 are, respectively, a side elevation partly in section, a front elevation, and .a plan view partly in section, of a still further embodiment of the present invention.
  • a carrier rod 26 which in turn rotatably carries the tensioning pulley I 2 about which the band Ill passes.
  • This carrier rod 25 is a relatively thin circular rod having a mid portion passing through a recess 52 in a rod-shaped support ,54 forming a stationary part of the machine.
  • a stirrup-like member 55 holds the mid portion 50 of the car.
  • - rier rod 26 in the recess-i2 and is provided with two prongs 58 embracing the support 54 v(see also Fig. 2).
  • the upper portion ,of the carrier rod between holder l;8 and support 54 is resilient for vibration in the plane of turning of the carrier 3 line.
  • the lower end 60 of the carrier rod 26' carries a preferably adjustable weight 62 which acts on the carrier 26 so that the pulley I2 is acted upon by the holder I8 in a direction tensioning the band I0.
  • the recess 52 in the support 54 can be kept small so that the width thereof only slightly exceeds the diameter of the carrier rod 26. In this way the position of the carrier rod 26 is secured against being wrongly mounted and changes during the operation of the machine are prevented.
  • the inclination of the tensioning pulley I2 is adjusted according to the requirement of the machine and the carrier 26 is connected to the support 54 by means of the stirrup 56. In consequence thereof the carrier rod 26 can be easily exchanged.
  • the carrier I50 ends substantially level with the support 54 to which it is connected by a substantially horizontal stirrup-like member 64 having bent-01f ends 66 arranged in conical holes or recesses 68 provided parallel to each other in the upper side of the support 54 substantially at right angles to the axis thereof.
  • the size and shape of the holes 68 define the limits of the angular deviations of the carrier I50.
  • a helical spring 70 is arranged on the support 54 having a circular cross section and embraces with one end I2 thereof the carrier I50.
  • the machine includes a support shaped as a stationary angle iron I4 to which is connected a bracket I6 by means of screw bolts I8 and nuts 80.
  • the bracket 16 has a recess 82 at the mid portion of the arm thereof which is secured to the angle iron III for accommodation of the lower part of a carrier I52. Since this part is inclined to the vertical a substantially U-shaped member 84 is arranged between the lower part of the carrier I52 and vertical portion of the angle iron I4.
  • the lower end 86 of the carrier I52 is bent off and in a substantially horizontal position.
  • the latter is provided with a short cylindrical member 08 arranged opposite to a corresponding cylindrical member 90 arranged at the upper leg of the bracket I6.
  • a helical spring 92 is interposed between the end 86 of the carrier I52 and the upper leg of the 4 bracket I6 and held in position by the cylindrical members 88 and 90 which have a slightly smaller diameter than the helix of the spring 92.
  • the vertical leg of the angle iron I4 is provided at its upper end with a shoulder 94 the sides of which serve as abutments for limiting the angular or rocking movements of the carrier I52 by abutting, respectively, against the member 04.
  • the operation of this device is substantially the same as that of the previously described embodiments.
  • the spring 92 serve for maintaining the tension of the band (not shown) by acting on the carrier I52 carrying the tensioning pulley (not shown in Figs. 5 and 6).
  • a carrier I54 is connected by means of rivets I00 to a member I02 having lateral prongs I04 embracing the supporting rod 54. Between the prongs I04 is arranged an intermediate member I06 which is secured to the support 54 by means of a pin I08.
  • the lower end of the carrier I54 carries a weight (not shown) similar to the weight 62 in Fig. 1.
  • this device is substantially the same as that of the embodiments shown in the other figures except that the member I02 limits the angular or rocking movements of the carrier I54 by striking against the intermediate member I06.
  • a support shaped as an angle iron I4 is connected by means of screw bolts I8 and nuts to a bracket-like member IIO having a curved lower end H2 and a substantially horizontal upper leg I I4 provided with a substantially rectangular hole II6 the opposite sides of which parallel to the angle iron 14' form abutments for a carrier II8 consisting of bent steel connected by an elastic portion I20 acting as a spring, and a straight leg I22 to the bracket H0 and the angle iron I4.
  • the leg I22 is provided with two holes for the screw bolts 18'.
  • the upper end of the carrier 8 is riveted by means of rivets I24 to a plate-like member I26 having an extension I28 which is angularly displaced with respect to the plate I26 and is provided with an oblong hole I30 for attachment of the holder (not shown) of the tensioning pulley (not shown).
  • band as used in the specification and claims, includes other forms of power transmission means, as e. g. belts, tapes and the like.
  • a band tensioning and guiding device comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier on the other side of said first axis constituting the other arm of said double-arm lever; pulley means mounted on said elongated carrier member at the free end of said resilient portion thereof for rotation about a second axis substantially.
  • said pulley means being adapted to engage a moving band for guiding the same; and urging means on said remaining portion of said elongated carrier member tending to turn said carrier member about said'first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means, whereby said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged band without interference by said urging means which does not similarly vibrate due to the inherent inertia of said urging means and said remaining portion of said carrier member.
  • a band tensioning and guiding device comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member "on the other side of said first axis constituting the other arm of said doublearm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; attaching means on said carrier member connected thereto in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side; pulley means arranged on said trailing side of said carrier member mounted on said attaching means for rotation about a, second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same; and urging
  • a band tensioning and guiding device comprising, in combination, a support member; an
  • elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction, said remaining portion extending laterally of said carrier member on the same side as said leading side; attaching means on said carrier member connected thereto in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side; pulley means arranged on said trailing side of said carrier member mounted on said attaching means for rotation about a second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same; and urging means on said remaining
  • a band tensioning and guiding device comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a first axis, the portion of said carrier in mber on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one of said leg portions being bent inwardly to form a band-catching member; pulley means arranged on said
  • a band tensioning and guiding device comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support for turning about a first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one of said leg portions being bent inwardly to form a band-catching member; pulley means arranged on said trailing side of
  • a band tensioning and guiding device comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a substantially horizontal first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever; pulley means mounted on said elongated carrier member at the free end of said resilient portion thereof for rotation about a second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same; and counter-weight means on said remaining portion of said elongated carrier member tending to turn said carrier member about said first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means, whereby said resilient portion of said carrier member
  • a band tensioning and guiding device comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said sup-port member for turning about a substantally horizontal first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one of said leg portions being bent inwardly to form a band-catching member; pulley
  • a band tensioning .and guiding device comprising, in combination,'a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a substantially horizontal first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portions of said carrier member on the other side of said first axis being shorter than said first-mentioned portion and constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one or" said leg portions being bent inwardly to form
  • said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged band without interference by said counter-weight means which does not similarly vibrate due to the inherent inertia of said counter-weight means and said remaining portion of said carrier member.
  • a band tensioning and guiding device comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a substantially horizontal first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having .a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one of said leg portions being bent inwardly to form a band catching member; pulley means arranged on said

Description

Oct 26, 1954 E. ROGNER CARRIER FOR BAND-TENSIONING PULLEYS 3 Sheet's-Sheet 1 Filed Oct. 26 1950 Inventon w A w,-
Oct. 26, 1954 RQGNER CARRIER FOR BAND-TENSIONING PULLEYS 3 Sheets-Sheet 2 Fil ed Oct. 26, 1950 Int/enter:
Oct. 26, 1954 E. ROGN ER 2,692,474
CARRIER FOR BAND-TENSIONING PULLEYS Filed Oct. 26, 1950 s sheets-sheet s Invemor:
Patented Oct. 26, 1954 UNITED STATES ATENT OFFICE Ernst Rogner, Stuttgart-Bad Cannstatt, Ger- SKF Kugellagerfabriken many, assignor to Gesellschaft mit beschraenkter Haftung,
Schweinfurt, Germany, a limited liability com- Application October 26, 1950, Serial No. 192,184
9 Claims.
The present invention relates to a device for guiding and tensioning a band, more particularly in textile machines.
It is an object of the present invention to render the impacts very small to which the carrier of the pulley guiding the band is subjected when the band is caught.
It is another object of the present invention to reduce the kinetic energy of the carrier in catching the band.
It is a still further object of the present invention to reduce the rocking motion of the carrier.
It is still another object of the present invention to provide the limiting stops for the rocking motion of the carrier at the support of the .same.
It is still another object of the present invention to define the position of the carrier in the longitudinal direction of the machine.
The invention comprises in its broadest aspect a pulley for guiding the band, an elongated carrier member having a resilient portion, first attaching means attaching the pulley to one end of the elongated carrier member rotatably relative to the same, a support member, second attaching means attaching the elongated carrier member in the region of the other end thereof to the support member turnably about an axis being parallel to the axis of turning of the pulley, and tensioning means permanently tending to turn the elongated carrier member together with the pulley about the second attaching means relative to the support member.
Preferably a weight acts on the resilient carrying member for moving the same into band-tensioning position.
In an alternative embodiment of the present invention resilient means are arranged between the support and the carrying member for moving the same into band-tensiom'ng position.
According to certain embodiments of the present invention the support has a circular .crosssection and a stirrup connected to the carrier member has prongs embracing the circular support.
In one embodiment of the present invention the support having a circular cross-section is provided with two holes being parallel to each other and in axial alignment and a stirrup-like member having ends arranged in the hole embraces with its mid-portion the carrier member while a helical spring wound around the support has an end acting upon the stirrup-like member and the carrier member so as to move the same into bandtensioning position.
In a preferred embodiment of the present invention the pulley is connected to a U-shaped strip by means of a bevelled intermediate portion connected with the smaller end face thereof to one end of the strip so that the ends of the U- shaped strip delimit wedge-formed spaces for .catching the band.
The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and .its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings, in which:
Fig. l is a side elevation partly in section of a first embodiment of a carrier for the tensioning pulley;
Fig. 2 is a plan view partly in section of the middle portion of the device shown in Fig. 1;
Fig. 3 is a side elevation partly in section of another embodiment of the carrier, only the lower part of the same being shown;
Fig. 4 is a plan view partly in section of the device shown in Fig. 3;
Figs. 5 and 6 are a side elevation and a plan view, respectively, partly in section, of a further embodiment of a carrier for the band-tensioning pulley, only the lower part of the carrier being shown;
Fig. 7 is a front elevation of a still further embodiment of a carrier for the band-tensioning pulley, only the middle portion .of the carrier being shown;
Fig. 8 is a section along the line 18-8 of Fig. 7;
Fig. 9 is a side elevation partly in section of the device shown in Fig. 7; and
Figs. 10, 11 and 12 are, respectively, a side elevation partly in section, a front elevation, and .a plan view partly in section, of a still further embodiment of the present invention.
Referring first to Fig. 1, it will be seen that on one end of the carrier rod 26 the holder [8 is mounted which in turn rotatably carries the tensioning pulley I 2 about which the band Ill passes. This carrier rod 25 is a relatively thin circular rod having a mid portion passing through a recess 52 in a rod-shaped support ,54 forming a stationary part of the machine. A stirrup-like member 55 holds the mid portion 50 of the car.- rier rod 26 in the recess-i2 and is provided with two prongs 58 embracing the support 54 v(see also Fig. 2). The upper portion ,of the carrier rod between holder l;8 and support 54 is resilient for vibration in the plane of turning of the carrier 3 line. The lower end 60 of the carrier rod 26' carries a preferably adjustable weight 62 which acts on the carrier 26 so that the pulley I2 is acted upon by the holder I8 in a direction tensioning the band I0.
The operation of this device is as follows:
Small movements of the rod-like carrier 26 due to the motion of the band I are taken up by the upper portion of the carrier owing to the elasticity thereof, without transferring them to the stirrup 56 and the support 54. In consequence thereof, a frictional movement of the prongs 58 of the stirrup 56 with respect to the support 54 is avoided. It should be understood that this arrangement is rendered possible by the small range of the carriers tilting motion limited by catching of the band slipped off the pulley of the band I0 because the kinetic energy of the pulley I2 to be taken up by the carrier rod 26 is relatively small. Further more as the carrier rod 2 6 makes only small angular or rocking movements the recess 52 in the support 54 can be kept small so that the width thereof only slightly exceeds the diameter of the carrier rod 26. In this way the position of the carrier rod 26 is secured against being wrongly mounted and changes during the operation of the machine are prevented. The inclination of the tensioning pulley I2 is adjusted according to the requirement of the machine and the carrier 26 is connected to the support 54 by means of the stirrup 56. In consequence thereof the carrier rod 26 can be easily exchanged.
Referring now to Figs. 3 and 4 of the drawing the upper part of a carrier is designed in the same manner as shown in Fig. 1. In the embodiment shown in Fig. 3, the carrier I50 ends substantially level with the support 54 to which it is connected by a substantially horizontal stirrup-like member 64 having bent-01f ends 66 arranged in conical holes or recesses 68 provided parallel to each other in the upper side of the support 54 substantially at right angles to the axis thereof. The size and shape of the holes 68 define the limits of the angular deviations of the carrier I50. In order to keep the band tensioned a helical spring 70 is arranged on the support 54 having a circular cross section and embraces with one end I2 thereof the carrier I50. By this arrangement the end 66 of the stirrup 64 moves within the holes or recesses 68 only at larger rocking movements of the carrier I50 whereas smaller movements are taken up by the resilient part of the carrier I50 (not shown in Figs. 3 and 6).
The operation of this device is substantially the same as that of the device shown in Figs. 1 and 2.
Referring now to Figs. 5 and 6, the machine includes a support shaped as a stationary angle iron I4 to which is connected a bracket I6 by means of screw bolts I8 and nuts 80. The bracket 16 has a recess 82 at the mid portion of the arm thereof which is secured to the angle iron III for accommodation of the lower part of a carrier I52. Since this part is inclined to the vertical a substantially U-shaped member 84 is arranged between the lower part of the carrier I52 and vertical portion of the angle iron I4. The lower end 86 of the carrier I52 is bent off and in a substantially horizontal position. The latter is provided with a short cylindrical member 08 arranged opposite to a corresponding cylindrical member 90 arranged at the upper leg of the bracket I6. A helical spring 92 is interposed between the end 86 of the carrier I52 and the upper leg of the 4 bracket I6 and held in position by the cylindrical members 88 and 90 which have a slightly smaller diameter than the helix of the spring 92. The vertical leg of the angle iron I4 is provided at its upper end with a shoulder 94 the sides of which serve as abutments for limiting the angular or rocking movements of the carrier I52 by abutting, respectively, against the member 04.
The operation of this device is substantially the same as that of the previously described embodiments. The spring 92 serve for maintaining the tension of the band (not shown) by acting on the carrier I52 carrying the tensioning pulley (not shown in Figs. 5 and 6).
Referring now to the embodiment shown in Figs. 7, 8 and 9, the mid portion I56 of a carrier I54 is connected by means of rivets I00 to a member I02 having lateral prongs I04 embracing the supporting rod 54. Between the prongs I04 is arranged an intermediate member I06 which is secured to the support 54 by means of a pin I08. The lower end of the carrier I54 carries a weight (not shown) similar to the weight 62 in Fig. 1.
The operation of this device is substantially the same as that of the embodiments shown in the other figures except that the member I02 limits the angular or rocking movements of the carrier I54 by striking against the intermediate member I06.
Referring now to Figs. 10 to 12, a support shaped as an angle iron I4 is connected by means of screw bolts I8 and nuts to a bracket-like member IIO having a curved lower end H2 and a substantially horizontal upper leg I I4 provided with a substantially rectangular hole II6 the opposite sides of which parallel to the angle iron 14' form abutments for a carrier II8 consisting of bent steel connected by an elastic portion I20 acting as a spring, and a straight leg I22 to the bracket H0 and the angle iron I4. The leg I22 is provided with two holes for the screw bolts 18'. Thus it will be seen that the elastic carrier H8 is firmly held between the bracket H0 and the angle iron I4 if the nuts 80 on the screw bolt 18' are tightened. The upper end of the carrier 8 is riveted by means of rivets I24 to a plate-like member I26 having an extension I28 which is angularly displaced with respect to the plate I26 and is provided with an oblong hole I30 for attachment of the holder (not shown) of the tensioning pulley (not shown).
It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of holders for tensioning pulleys differing from the types described above.
While I have illustrated and described the invention as embodied in a holder for tensioning pulleys in textile machines, I do not intend to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of my invention.
Without further analysis, the foregoing will so fully reveal the gist of my invention that others can by applying current knowledge readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention, and, therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalence of the following claims.
It is to be understood that the term band as used in the specification and claims, includes other forms of power transmission means, as e. g. belts, tapes and the like.
What I claim a new and desire to secure by Letters Patent is:
. 1. A band tensioning and guiding device, comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier on the other side of said first axis constituting the other arm of said double-arm lever; pulley means mounted on said elongated carrier member at the free end of said resilient portion thereof for rotation about a second axis substantially. parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same; and urging means on said remaining portion of said elongated carrier member tending to turn said carrier member about said'first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means, whereby said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged band without interference by said urging means which does not similarly vibrate due to the inherent inertia of said urging means and said remaining portion of said carrier member.
2. .A band tensioning and guiding device, comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member "on the other side of said first axis constituting the other arm of said doublearm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; attaching means on said carrier member connected thereto in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side; pulley means arranged on said trailing side of said carrier member mounted on said attaching means for rotation about a, second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same; and urging means on said remaining portion of said elongated carrier member tending to turn said carrier member about said first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means, whereby said, resilient portion of said carrier member carrying said pulley means is free to slightly vibratedue to slight changes in tension of the engaged band Without interference by said urging means which does not similarly vibrate due to the inherent inertia of said urging means and said remaining portion of said carrier member.
3. A band tensioning and guiding device, comprising, in combination, a support member; an
elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction, said remaining portion extending laterally of said carrier member on the same side as said leading side; attaching means on said carrier member connected thereto in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side; pulley means arranged on said trailing side of said carrier member mounted on said attaching means for rotation about a second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same; and urging means on said remaining portion of said elongated carrier member tending to turn said carrier member about said first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means, whereby said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged band Without interference by said urging means which does not similarly vibrate due to the inherent inertia of said urging means and said remaining portion of said carrier member.
4. A band tensioning and guiding device, comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a first axis, the portion of said carrier in mber on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one of said leg portions being bent inwardly to form a band-catching member; pulley means arranged on said trailing side of said carrier member mounted between said legs of said attaching member and on the other of said legs thereof for rotation about a second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same; and urging means on said remaining portion of said elongated carrier member tending to turn said carrier member about said first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means, whereby said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged band without interference by said urging means which does not similarly vibrate due to the inherent inertia of said urging means and said remaining portion of said carrier member.
5. A band tensioning and guiding device, comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support for turning about a first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one of said leg portions being bent inwardly to form a band-catching member; pulley means arranged on said trailing side of said carrier member mounted between said legs of said attaching member and on the other of said legs thereof for rotation about a second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same, the band-catching member being arranged between said second axis and the periphery of the pulley means nearest said carrier member; and urging means on said remaining portion of said elongated carrier member tending to turn said carrier member about said first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means, whereby said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged hand without interference by said urging means which does not similarly vibrate due to the inherent inertia of said urging means and said remaining portion of said carrier member.
6. A band tensioning and guiding device, comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a substantially horizontal first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever; pulley means mounted on said elongated carrier member at the free end of said resilient portion thereof for rotation about a second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same; and counter-weight means on said remaining portion of said elongated carrier member tending to turn said carrier member about said first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means, whereby said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged band without interference by said counter-Weight means which does not similarly vibrate due to the inherent inertia of said counter-weight means and said remaining portion of said carrier member.
7. A band tensioning and guiding device, comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said sup-port member for turning about a substantally horizontal first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one of said leg portions being bent inwardly to form a band-catching member; pulley means arranged on said trailing side of said carrier member mounted between said legs of said attaching member and on the other of said legs thereof for rotation about a second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same, the bandcatching member being arranged between said second axis and the periphery of the pulley means nearest said carrier member; and counter-weight means on said remaining portion of said elongated carrier member tending to turn said carrier member about said first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means, whereby said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged band without interference by said counter-weight means which does not similarly vibrate due to the inherent inertia of said counter-weight means and said remaining portion of said carrier member.
8. A band tensioning .and guiding device, comprising, in combination,'a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a substantially horizontal first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portions of said carrier member on the other side of said first axis being shorter than said first-mentioned portion and constituting the other arm of said double-arm lever, said resilient portion having a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one or" said leg portions being bent inwardly to form a band-catching member; pulley means arranged on said trailing side of said carrier member mounted between said legs of said attaching member and on the other of said legs thereof for rotation about a second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same, the band-catching member being arranged between said second axis and the periphery of the pulley means nearest said carrier member; and counterweight means on said remaining portion of said elongated carrier member tending toturn said carrier member about said first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means,
whereby said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged band without interference by said counter-weight means which does not similarly vibrate due to the inherent inertia of said counter-weight means and said remaining portion of said carrier member.
9. A band tensioning and guiding device, comprising, in combination, a support member; an elongated carrier member forming a double-arm lever pivotally mounted intermediate its ends on said support member for turning about a substantially horizontal first axis, the portion of said carrier member on one side of said first axis constituting one arm of said double-arm lever and being resilient for vibration in the plane of turning of said carrier member, and the remaining portion of said carrier member on the other side of said first axis constituting the other arm of said double-arm lever, said resilient portion having .a leading side facing in one direction of turning of said carrier member and a trailing side facing in the opposite direction; a U-shaped attaching member having a pair of leg portions and a mid-portion connecting said leg portions, said attaching member being connected at its mid-portion to said carrier member in the region of the free end of said resilient portion thereof and extending laterally thereof on said trailing side, the free end of one of said leg portions being bent inwardly to form a band catching member; pulley means arranged on said trailing side of said carrier member mounted between said legs of said attaching member on the other of said legs thereof for rotation about a second axis substantially parallel to said first axis, said pulley means being adapted to engage a moving band for guiding the same, the band-catching member being arranged between said second axis and the periphery of the pulley means nearest said carrier member; counter-weight means on said remaining portion of said elongated carrier member tending to turn said carrier member about said first axis so as to urge said pulley means in the direction of turning for tensioning a band engaged by said pulley means; and stop means for limiting the turning of said carrier member about said first axis relative to said support member, whereby said resilient portion of said carrier member carrying said pulley means is free to slightly vibrate due to slight changes in tension of the engaged band without interference by said counter-weight means which does not similarly vibrate due to the inherent inertia of said counter-weight means and said remaining portion of said carrier member.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 341,631 Baird May 11, 1886 403,048 Jones May 7, 1889 520,473 Atherton May 29, 1894 853,371 Nims May 14, 1907 1,137,053 Cunningham et .al. Apr. 27, 1915 2,070,713 Dodd Feb. 16, 1937 2,297,250 Sato Sept. 29, 1942 2,303,172 Nutting Nov. 24, 1942 2,329,159 Gwaltney et a1 Sept. 7, 1943 FQREIGN PATENTS Number Country Date 213,366 Great Britain Apr. 3, 1924 502,226 Great Britain Mar. 14, 1939 505,004 Great Britain May 3, 1939 603,471 Germany Oct. 26, 1935
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US3382661A (en) * 1967-01-30 1968-05-14 Scragg & Sons Textile apparatus
US3952495A (en) * 1974-02-20 1976-04-27 Roberts Company Tension pulley assembly for textile spinning machines
US4193254A (en) * 1977-12-06 1980-03-18 S.A.M.P.R.E. S.P.A. Tensioning device for a drive belt for controlling the rotation of aligned members such as spindles of textile machines

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US403048A (en) * 1889-05-07 Charles william jones
US520473A (en) * 1894-05-29 Tension device for spinning-frames
US853371A (en) * 1904-03-11 1907-05-14 Alfred Thomas Tape-pulley for spinning or twisting machines.
US1137053A (en) * 1914-04-03 1915-04-27 John G Cunningham Tension-regulator for spinning-machines.
GB213366A (en) * 1923-01-24 1924-04-03 Walter John Bromley Improvements in or relating to the spindle driving means of spinning and like machines
DE603471C (en) * 1932-12-22 1934-10-26 Carl Hamel Akt Ges Spindle drive for spinning, twisting and similar textile machines
US2070713A (en) * 1935-04-10 1937-02-16 Samuel Dodd & Sons Ltd Tape drive for the spindles of spinning and doubling frames
GB502226A (en) * 1938-05-10 1939-03-14 Carl Hamel Ag Tape drive for two-sided spinning frames, doubling frames and like textile machines
GB505004A (en) * 1938-05-10 1939-05-03 Carl Hamel Ag Tape drive for two-sided spinning frames, doubling frames and like textile machines
US2297250A (en) * 1936-03-14 1942-09-29 Sato Shinzaburo Tension apparatus
US2303172A (en) * 1937-02-27 1942-11-24 Saco Lowell Shops Spinning frame
US2329159A (en) * 1940-12-28 1943-09-07 Saco Lowell Shops Tape tensioning pulley

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Publication number Priority date Publication date Assignee Title
US341631A (en) * 1886-05-11 William bated
US403048A (en) * 1889-05-07 Charles william jones
US520473A (en) * 1894-05-29 Tension device for spinning-frames
US853371A (en) * 1904-03-11 1907-05-14 Alfred Thomas Tape-pulley for spinning or twisting machines.
US1137053A (en) * 1914-04-03 1915-04-27 John G Cunningham Tension-regulator for spinning-machines.
GB213366A (en) * 1923-01-24 1924-04-03 Walter John Bromley Improvements in or relating to the spindle driving means of spinning and like machines
DE603471C (en) * 1932-12-22 1934-10-26 Carl Hamel Akt Ges Spindle drive for spinning, twisting and similar textile machines
US2070713A (en) * 1935-04-10 1937-02-16 Samuel Dodd & Sons Ltd Tape drive for the spindles of spinning and doubling frames
US2297250A (en) * 1936-03-14 1942-09-29 Sato Shinzaburo Tension apparatus
US2303172A (en) * 1937-02-27 1942-11-24 Saco Lowell Shops Spinning frame
GB502226A (en) * 1938-05-10 1939-03-14 Carl Hamel Ag Tape drive for two-sided spinning frames, doubling frames and like textile machines
GB505004A (en) * 1938-05-10 1939-05-03 Carl Hamel Ag Tape drive for two-sided spinning frames, doubling frames and like textile machines
US2329159A (en) * 1940-12-28 1943-09-07 Saco Lowell Shops Tape tensioning pulley

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3382661A (en) * 1967-01-30 1968-05-14 Scragg & Sons Textile apparatus
US3952495A (en) * 1974-02-20 1976-04-27 Roberts Company Tension pulley assembly for textile spinning machines
US4193254A (en) * 1977-12-06 1980-03-18 S.A.M.P.R.E. S.P.A. Tensioning device for a drive belt for controlling the rotation of aligned members such as spindles of textile machines

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