CA1127194A - Apparatus for handling bobbins - Google Patents
Apparatus for handling bobbinsInfo
- Publication number
- CA1127194A CA1127194A CA333,445A CA333445A CA1127194A CA 1127194 A CA1127194 A CA 1127194A CA 333445 A CA333445 A CA 333445A CA 1127194 A CA1127194 A CA 1127194A
- Authority
- CA
- Canada
- Prior art keywords
- bobbin
- fluid
- bobbins
- engaging unit
- handling apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Apparatus is provided for handling bobbins and particu-larly for transferring bobbins from one location to another. The apparatus includes a cart having parallel linkages pivotally mounted theron and connected to a fluid-operated ram. A bobbin-engaging unit is carried at the ends of the linkages and engages the bobbin internally. After engagement, the linkages are manipulated to transfer the bobbin to another location with the weight of the bobbin and mechanism being offset by the fluid-operated cylinder. The cart is designed to be attached to a portable bobbin buggy so that both can then be pushed as a unit to move the buggy to a desired location from which the bobbins are transferred to a creel or rack, for example.
This invention relates to apparatus for handling bobbins or the like and for transferring them from one location to another.
Bobbins or spools of filaments, strands, threads, yarn, roving, and the like produced in textile mills often weigh 25-30 lbs. or more with some being in the order of 100 lbs. It is tiring for workers to handle a multiplicity of such bobbins over the course of a day. Also, the bobbins may be mishandled and damaged, parti-culary by a tired worker, and moisture from the hands may be damaging to the filaments, etc.
Apparatus is provided for handling bobbins and particu-larly for transferring bobbins from one location to another. The apparatus includes a cart having parallel linkages pivotally mounted theron and connected to a fluid-operated ram. A bobbin-engaging unit is carried at the ends of the linkages and engages the bobbin internally. After engagement, the linkages are manipulated to transfer the bobbin to another location with the weight of the bobbin and mechanism being offset by the fluid-operated cylinder. The cart is designed to be attached to a portable bobbin buggy so that both can then be pushed as a unit to move the buggy to a desired location from which the bobbins are transferred to a creel or rack, for example.
This invention relates to apparatus for handling bobbins or the like and for transferring them from one location to another.
Bobbins or spools of filaments, strands, threads, yarn, roving, and the like produced in textile mills often weigh 25-30 lbs. or more with some being in the order of 100 lbs. It is tiring for workers to handle a multiplicity of such bobbins over the course of a day. Also, the bobbins may be mishandled and damaged, parti-culary by a tired worker, and moisture from the hands may be damaging to the filaments, etc.
Description
11~71~
The apparatus in accordance with the invention includes a bobb:in-handling cart mounted on casters or other wheels. The cart is designed to be sufficiently narrow to travel down the aisles of a textile mill and sufficiently low to avoid interfer-ence with overhead obstructions. An upright elongate member or sleeve is pivotally mounted on the cart for pivotal movement about a generally vertical axis. An upper link is pivotally connected to an upper portion of the elongate member and a lower link is similarly pivotally connected to a llower portion of the elongate member in spaced relationship with respect to the upper link.
A fluid-operated ram is connected to the upper and lower links in a manner such that when fluid is applied to a cylinder of the ram under pressure, it tends to raise the links. An outer, up-right elongate member or rod is pivotally connected between outer end portions of the two links. A bracket is pivotally mounted for movement about a generally vertical axis on the outer elongate member and carries a bobbin-engaging unit which has an expandable member that is inserted into the bobbin and enga~es the inner surface thereof. Fluid under higher pressure is then supplied to the ram to offset a substantial portion of the weight of the bobbin and associated mechanism. The operatox can then move the bobbin from a bobbin buggy, for example, to a creel. The bobbin-handling cart has means for being connected to the hobbin buggy so that the two can be manipulated as a unit down aisles of the textile mill to the location of the creel.
In one form, a second fluid-operàted ram can be moun~ed on the outer elongate member to move the bracket vertically with respect to that member, thereby providing additional flexibility in the manipulation of the bobbin-engaging unit. The bobbin-engaging unit also is preferably pivotally mounted with respectto the bracket on the outer elongate member for additional flexi-bility and ease of handling.
~`
~lZ~i~
It is r therefore, a principal object of the invention to provide bobbin-handling apparatus having the advantages and features discussed above.
Many other ob~ects and advantages of the invention will be apparent fro~. the following detailed description of a preferred embodiment thereof, reference being made to the accompanying drawings, in which;
Fig. 1 is a somewhat schematic, overall view in perspec-tive of a bobbin-handling cart and a bobbin buggy in accordance with the invention, and a creel rack.
Fig. 2 is an enlarged, fragmentary view in perspective of a portion of the bobbin-handling cart of Fig. l; and Fig. 3 is a diagrammatic view of fluid controls for the apparatus of Fig. 1 and 2.
Referring to the drawings, and particularly to Fig. 1, a bobbin-handling cart indicated at 10 is used to transfer bobbins 12 from a bobbin buggy or cart 14 to a creel rack 18. The bobbins 12 are transported from a spinning area by the buggy 14, being located on pins 18 of a frame 20 mounted on a base 22 having casters 24. The bobbins 12 also could be transported in a car.~on located on the base 22 of the buggy 14. Whether on the pi~s or in cartons, the bobbins are transferred to pins 26 extending from a creel rack 28 for further processing.
The bobbins commonly weigh 25 to 30 lbs. and some weigh in the order of 100 lbs. Even the smaller bobbins can be tiring to workers handling them all day and if the bobbins are dropped, the damage to the threads can render the bobbins almos~ valueless.
Further, moisture from the workers' hands can damage SOIne filaments or yarn, particularly if they are of glass. The bobbin-handling cart 10 overcomes the above problems by assisting the operator through ofsetting most of the weight of the bobbins and the bobbins need not be touched by the operator or ~orker.
The bobbin-handling cart 10 includes a base 30 with wheels 31 and having a pair of cross frame members 32 connected by a longitudinal frame 34 to another cross frame member 36 at the other end of the cart. A platform 38 is located above the pair of cross frame members 32 and is supported by two pairs of slanted frame members 40 and 42.
A pivot rod or axle 44 is rigidly mounted on the plat-form 38 and extends upwardly therefrom. An elongate member or sleeve 46 is located around the pivot rod 44 and is support~d at the bottom by a thrust bearing 48, with another thrust bearing 50 being located at the top, under a cap 52 affixed to the upper~end of the rod 44. A pair of ears 54 are suitably affixed to an upper portion of the elongate member 46 with a pair of linkages 56 pivotally connected to the ears 54 by pins 58. The outer ends of the links 56 terminate in a yoke 60. A pair of lower ears 62 are suitably affixed to a lower portion of the elongate member 46 and a pair of lower links 64 are affixed to the lower ear 62 by a pin 66 and positioned generally parallel to the links 56. The outer ends of the links 64 terminate in a yoke 68.
A fluid-operated ram 70 is mounted to ur~e the links 56 and 64 upwardly when pressure is supplied to the blind end. The ram 70 has a cylinder 72 which is pivotally connected to the ears 62 and the links 64 by the pin 66. The ram 70 also has a piston rod 74 pivotally connected at its upper ~nd to the links 56 by a pin 76 at a position substantially spaced from the elongate member 46. Thus, when pressure is applied to the blind end of the cylinder 72, the piston rod 74 tends to extend and raise the links 56 and 64.
An outer elongate member or rod 78 has upper and lower ears 80 and 82 pivotally connected to the upper yo7;e 60 and the lower yoke 68 by pins 84 and 86. A bearing sleeve 88 and specif-ically a ball bushing is located on the elongate member 78 for pivotal movement about a vertical axis and, in this instance, also for vertical movement. A bracket 90 located on the bearing slPeve 88 is connected to a piston rod 92 of a second fluid-operated ram 94 having a cylinder 96 connected to a thrust bearing 98 suitably mounted for pivotal, but non-longitudinal, movement at an upper end portion of the elongate member 78. With this arrangement, the fluid-operated ram 94 can pivot around the elongate member 78 along with the bearing sleeve 88 and the bracket 90. When fluid under pressure is ~upplied to the rod end of the cylinder 96, the piston rod 92 tends to retract into the cylinder 96 to urge the bearing sleeve 88 and the bracket 90 upwardly relative to the elongate member 78. The sleeve and bracket are shown in their uppermost position in Fig. 2.
A bobblni-engaging unit 100 is preferably pivotally carried by the bracket 90. The unit 100 includes a circular mounting plate 102 from which ears 104 extend, the ears baing pivotally connected to the bracket 90 by pins 106. An expandable member or inflatable bag lOa ~Fig.~ 3) extends forwardly of the mounting plate 102 and can be supplied with air under pressure to expand its diameter and engage the inner surface of the bobbin 12.
A manipulating handle 110 extends upwardly from the mounting plate 102 and carries a selector switch 112 which is effective to supply fluid under pressure to the inflatable bag 108, and to the fluid-operated rams 70 and 94, as will be discussed subsequently.
The aontrols for the cylinders 72 and 96 and the air bag 108 are shown in Fig. 3. Fluid, and specifically air, for the components is supplied through a line 114. This line can be a flexible one extending from the bobbin-handling cart 10 to a suitable source of shop air or, alternately, a tank of compressed air, wh~ch is recharged frQm tlme~to-time, can be carried on the cart. The controls preferably are mounted under the platform 38 in Fig~ 1.
~7~
Air pressure in the cylinder 72 is controlled through a regulator 116 which can be generally of the type shown in U.S.
patent 3,457,837 issued on July 29, 1969. A similar regulator 118 controls the air pressure in the cylinder 96. The air is maintained by the regulator 116 for the cylinder 72 at either of two pressures, a lower pressure and a higher pressure, as deter-mined by a two-position control va~-ve 120 which con~rols the pressure of pilot air to the regulator. Similarly, air is maintained at either of two pressures, a lower pressure and a higher pressure, by the regulator 118 for the cylinder 96, as determined by ~ two-position ~ontrol valve 122 which controls the pressure of pilot air to the regulator. This control system is disclosed and discussed more fully in U.S patent 3,756,563, issued on September 4, 1973.
The lower pressure of air maintained in the cylinder 72 is selected so that an operator can move the bobbin-engaging unit 100 up and down by applying only a slight pressure in either direction. Thus, the pressure is sufficient to offset the weight of the various linkages 56 and 64 and the outer elongate member 78, along ~ith the outer ram 94, the bearing sleeve 88, and the bracket 90. The higher pressure of air maintained in the cylinder 72 is selected so that it also offsets the weight of the various components plus the weight of the bobbin 12 engaged by the unit 100. Thus, when a bobbin is carried by the unit, the operator again can move the bobbin and components up and down by applying only a slight pressure by hand to the unit 100 or to the handle 110 thereof.
The design of the outer elong~te member 78 and related components provides, through the extra vertical movement of the unit 100, additional manipulation to facilitate the alignment and entry of the air bag 108 into the bobbin 12. The lower pressure of the air supplied to the cylinder 96 is sufficient to offset the weight of the unit 100, the associated bracket 90, and the bearing sleeves 88. The higher pressure is sufficient to offset the weight of those components and the bobbin 12 engaged by the bag 108 of the unit 100. The design is such that the operator, in moving the handle 110 up or down, will usually cause the over-all parallel linkages 56 and 64 to move up and down before the bushing 88 moves up or down on the elongate member 78. However, the reverse can occur and which moves first is essentially immaterial.
When the selector switch is moved to its high pressure position after the air bag 108 is inserted in the bobbin 12, air from the source 114 is supplied under high pressure to the bag 108 to expand it. At the same time, higher pressure air is supplied through the selector switch 112 to the two-position valves 120 and 122. These, in turn, supply higher pressure pilot air to the regulators 116 and 118 which causes them to maintain the higher pressure air in the cylinders 72 and 96. As the bobbin and mechanism are moved up by the operator, additional air is supplied into the cylinders by the regulators. When the bobbin and mèchanism are ~.oved down by the operator, the regulators exhaust air from the cylinders 72 and 96. Consequently, only a sm~ll force is required by the operator to move the bobbin up and down as well as to move it horizontally.
It is to be understood that other bobbin-engaging units can be employed. Also, the links 56 and 64 and related mechanism can be suspended from a pair of parallel, overhead rails by rollers or wheels, if desired. The buggy 14 would then by movable independently.
Various modifications of the above-described embodiment of the invention will be apparent to those skilled in the art, and it is to be understood that such modifications can be made without departing from the scope of the invention, if they are within the spirit and the tenor of the accompanying claims.
The apparatus in accordance with the invention includes a bobb:in-handling cart mounted on casters or other wheels. The cart is designed to be sufficiently narrow to travel down the aisles of a textile mill and sufficiently low to avoid interfer-ence with overhead obstructions. An upright elongate member or sleeve is pivotally mounted on the cart for pivotal movement about a generally vertical axis. An upper link is pivotally connected to an upper portion of the elongate member and a lower link is similarly pivotally connected to a llower portion of the elongate member in spaced relationship with respect to the upper link.
A fluid-operated ram is connected to the upper and lower links in a manner such that when fluid is applied to a cylinder of the ram under pressure, it tends to raise the links. An outer, up-right elongate member or rod is pivotally connected between outer end portions of the two links. A bracket is pivotally mounted for movement about a generally vertical axis on the outer elongate member and carries a bobbin-engaging unit which has an expandable member that is inserted into the bobbin and enga~es the inner surface thereof. Fluid under higher pressure is then supplied to the ram to offset a substantial portion of the weight of the bobbin and associated mechanism. The operatox can then move the bobbin from a bobbin buggy, for example, to a creel. The bobbin-handling cart has means for being connected to the hobbin buggy so that the two can be manipulated as a unit down aisles of the textile mill to the location of the creel.
In one form, a second fluid-operàted ram can be moun~ed on the outer elongate member to move the bracket vertically with respect to that member, thereby providing additional flexibility in the manipulation of the bobbin-engaging unit. The bobbin-engaging unit also is preferably pivotally mounted with respectto the bracket on the outer elongate member for additional flexi-bility and ease of handling.
~`
~lZ~i~
It is r therefore, a principal object of the invention to provide bobbin-handling apparatus having the advantages and features discussed above.
Many other ob~ects and advantages of the invention will be apparent fro~. the following detailed description of a preferred embodiment thereof, reference being made to the accompanying drawings, in which;
Fig. 1 is a somewhat schematic, overall view in perspec-tive of a bobbin-handling cart and a bobbin buggy in accordance with the invention, and a creel rack.
Fig. 2 is an enlarged, fragmentary view in perspective of a portion of the bobbin-handling cart of Fig. l; and Fig. 3 is a diagrammatic view of fluid controls for the apparatus of Fig. 1 and 2.
Referring to the drawings, and particularly to Fig. 1, a bobbin-handling cart indicated at 10 is used to transfer bobbins 12 from a bobbin buggy or cart 14 to a creel rack 18. The bobbins 12 are transported from a spinning area by the buggy 14, being located on pins 18 of a frame 20 mounted on a base 22 having casters 24. The bobbins 12 also could be transported in a car.~on located on the base 22 of the buggy 14. Whether on the pi~s or in cartons, the bobbins are transferred to pins 26 extending from a creel rack 28 for further processing.
The bobbins commonly weigh 25 to 30 lbs. and some weigh in the order of 100 lbs. Even the smaller bobbins can be tiring to workers handling them all day and if the bobbins are dropped, the damage to the threads can render the bobbins almos~ valueless.
Further, moisture from the workers' hands can damage SOIne filaments or yarn, particularly if they are of glass. The bobbin-handling cart 10 overcomes the above problems by assisting the operator through ofsetting most of the weight of the bobbins and the bobbins need not be touched by the operator or ~orker.
The bobbin-handling cart 10 includes a base 30 with wheels 31 and having a pair of cross frame members 32 connected by a longitudinal frame 34 to another cross frame member 36 at the other end of the cart. A platform 38 is located above the pair of cross frame members 32 and is supported by two pairs of slanted frame members 40 and 42.
A pivot rod or axle 44 is rigidly mounted on the plat-form 38 and extends upwardly therefrom. An elongate member or sleeve 46 is located around the pivot rod 44 and is support~d at the bottom by a thrust bearing 48, with another thrust bearing 50 being located at the top, under a cap 52 affixed to the upper~end of the rod 44. A pair of ears 54 are suitably affixed to an upper portion of the elongate member 46 with a pair of linkages 56 pivotally connected to the ears 54 by pins 58. The outer ends of the links 56 terminate in a yoke 60. A pair of lower ears 62 are suitably affixed to a lower portion of the elongate member 46 and a pair of lower links 64 are affixed to the lower ear 62 by a pin 66 and positioned generally parallel to the links 56. The outer ends of the links 64 terminate in a yoke 68.
A fluid-operated ram 70 is mounted to ur~e the links 56 and 64 upwardly when pressure is supplied to the blind end. The ram 70 has a cylinder 72 which is pivotally connected to the ears 62 and the links 64 by the pin 66. The ram 70 also has a piston rod 74 pivotally connected at its upper ~nd to the links 56 by a pin 76 at a position substantially spaced from the elongate member 46. Thus, when pressure is applied to the blind end of the cylinder 72, the piston rod 74 tends to extend and raise the links 56 and 64.
An outer elongate member or rod 78 has upper and lower ears 80 and 82 pivotally connected to the upper yo7;e 60 and the lower yoke 68 by pins 84 and 86. A bearing sleeve 88 and specif-ically a ball bushing is located on the elongate member 78 for pivotal movement about a vertical axis and, in this instance, also for vertical movement. A bracket 90 located on the bearing slPeve 88 is connected to a piston rod 92 of a second fluid-operated ram 94 having a cylinder 96 connected to a thrust bearing 98 suitably mounted for pivotal, but non-longitudinal, movement at an upper end portion of the elongate member 78. With this arrangement, the fluid-operated ram 94 can pivot around the elongate member 78 along with the bearing sleeve 88 and the bracket 90. When fluid under pressure is ~upplied to the rod end of the cylinder 96, the piston rod 92 tends to retract into the cylinder 96 to urge the bearing sleeve 88 and the bracket 90 upwardly relative to the elongate member 78. The sleeve and bracket are shown in their uppermost position in Fig. 2.
A bobblni-engaging unit 100 is preferably pivotally carried by the bracket 90. The unit 100 includes a circular mounting plate 102 from which ears 104 extend, the ears baing pivotally connected to the bracket 90 by pins 106. An expandable member or inflatable bag lOa ~Fig.~ 3) extends forwardly of the mounting plate 102 and can be supplied with air under pressure to expand its diameter and engage the inner surface of the bobbin 12.
A manipulating handle 110 extends upwardly from the mounting plate 102 and carries a selector switch 112 which is effective to supply fluid under pressure to the inflatable bag 108, and to the fluid-operated rams 70 and 94, as will be discussed subsequently.
The aontrols for the cylinders 72 and 96 and the air bag 108 are shown in Fig. 3. Fluid, and specifically air, for the components is supplied through a line 114. This line can be a flexible one extending from the bobbin-handling cart 10 to a suitable source of shop air or, alternately, a tank of compressed air, wh~ch is recharged frQm tlme~to-time, can be carried on the cart. The controls preferably are mounted under the platform 38 in Fig~ 1.
~7~
Air pressure in the cylinder 72 is controlled through a regulator 116 which can be generally of the type shown in U.S.
patent 3,457,837 issued on July 29, 1969. A similar regulator 118 controls the air pressure in the cylinder 96. The air is maintained by the regulator 116 for the cylinder 72 at either of two pressures, a lower pressure and a higher pressure, as deter-mined by a two-position control va~-ve 120 which con~rols the pressure of pilot air to the regulator. Similarly, air is maintained at either of two pressures, a lower pressure and a higher pressure, by the regulator 118 for the cylinder 96, as determined by ~ two-position ~ontrol valve 122 which controls the pressure of pilot air to the regulator. This control system is disclosed and discussed more fully in U.S patent 3,756,563, issued on September 4, 1973.
The lower pressure of air maintained in the cylinder 72 is selected so that an operator can move the bobbin-engaging unit 100 up and down by applying only a slight pressure in either direction. Thus, the pressure is sufficient to offset the weight of the various linkages 56 and 64 and the outer elongate member 78, along ~ith the outer ram 94, the bearing sleeve 88, and the bracket 90. The higher pressure of air maintained in the cylinder 72 is selected so that it also offsets the weight of the various components plus the weight of the bobbin 12 engaged by the unit 100. Thus, when a bobbin is carried by the unit, the operator again can move the bobbin and components up and down by applying only a slight pressure by hand to the unit 100 or to the handle 110 thereof.
The design of the outer elong~te member 78 and related components provides, through the extra vertical movement of the unit 100, additional manipulation to facilitate the alignment and entry of the air bag 108 into the bobbin 12. The lower pressure of the air supplied to the cylinder 96 is sufficient to offset the weight of the unit 100, the associated bracket 90, and the bearing sleeves 88. The higher pressure is sufficient to offset the weight of those components and the bobbin 12 engaged by the bag 108 of the unit 100. The design is such that the operator, in moving the handle 110 up or down, will usually cause the over-all parallel linkages 56 and 64 to move up and down before the bushing 88 moves up or down on the elongate member 78. However, the reverse can occur and which moves first is essentially immaterial.
When the selector switch is moved to its high pressure position after the air bag 108 is inserted in the bobbin 12, air from the source 114 is supplied under high pressure to the bag 108 to expand it. At the same time, higher pressure air is supplied through the selector switch 112 to the two-position valves 120 and 122. These, in turn, supply higher pressure pilot air to the regulators 116 and 118 which causes them to maintain the higher pressure air in the cylinders 72 and 96. As the bobbin and mechanism are moved up by the operator, additional air is supplied into the cylinders by the regulators. When the bobbin and mèchanism are ~.oved down by the operator, the regulators exhaust air from the cylinders 72 and 96. Consequently, only a sm~ll force is required by the operator to move the bobbin up and down as well as to move it horizontally.
It is to be understood that other bobbin-engaging units can be employed. Also, the links 56 and 64 and related mechanism can be suspended from a pair of parallel, overhead rails by rollers or wheels, if desired. The buggy 14 would then by movable independently.
Various modifications of the above-described embodiment of the invention will be apparent to those skilled in the art, and it is to be understood that such modifications can be made without departing from the scope of the invention, if they are within the spirit and the tenor of the accompanying claims.
Claims (8)
1. Bobbin-handling apparatus comprising a frame, means for movably supporting said frame, an upright elongate member, means pivotally mounting said upright member on said frame for pivotal movement about a generally vertical axis, a bobbin-engaging unit including an expandable member which can expand when supplied with fluid under pressure to engage the inner surface of the bob bin, linkage means connecting said bobbin-engaging unit and said upright member for vertical movement of said engaging unit with re-spect to said upright member, an outer member pivotally carried by said linkage means and spaced from said upright elongate member, and fluid-operated means connected to said linkage means and effec-tive to urge said engaging unit upwardly when said fluid-operated means is supplied with fluid under pressure.
2. Bobbin-handling apparatus according to claim 1 charac-terized by said engaging unit being carried by said outer member for pivotal movement about a generally vertical axis.
3. Bobbin-handling apparatus according to claim 1 charac-terized by means for supplying fluid under low pressure to said fluid-operated means and for substantially simultaneously supply-ing fluid under higher pressure to said fluid-operated means and to said expandable member.
4. Bobbin-handling apparatus according to claim 1 charac-terized by bracket means mounted on said outer member for pivotal movement about a generally vertical axis and connected to said bobbin-engaging unit.
5. Bobbin-handling apparatus according to claim 4 charac-terized by means pivotally connecting said bracket means to said bobbin-engaging unit.
6. Bobbin-handling apparatus according to claim 4 charac-terized by second fluid-operated means connected to said bracket means for urging said bracket means in an upward direction rela-tive to said outer member.
7. Bobbin-handling apparatus according to claim 1 charac-terized by means connecting said bobbin-engaging unit to said outer member for generally vertical movement with respect there-to, and second fluid-operated means carried by said outer member and connected to said connecting means for urging said bobbin-engaging unit in an upward direction when said second fluid-operated means is supplied with fluid under pressure.
8. Bobbin-handling apparatus according to claim 1 charac-terized by said linkage means being effective to maintain said outer member in a substantially vertical orientation for all po-sitions thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA333,445A CA1127194A (en) | 1979-08-09 | 1979-08-09 | Apparatus for handling bobbins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA333,445A CA1127194A (en) | 1979-08-09 | 1979-08-09 | Apparatus for handling bobbins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1127194A true CA1127194A (en) | 1982-07-06 |
Family
ID=4114894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA333,445A Expired CA1127194A (en) | 1979-08-09 | 1979-08-09 | Apparatus for handling bobbins |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1127194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112694016A (en) * | 2020-12-17 | 2021-04-23 | 中国二十冶集团有限公司 | Bridge crane steel wire rope installation auxiliary device and using method thereof |
-
1979
- 1979-08-09 CA CA333,445A patent/CA1127194A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112694016A (en) * | 2020-12-17 | 2021-04-23 | 中国二十冶集团有限公司 | Bridge crane steel wire rope installation auxiliary device and using method thereof |
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