US3441058A - Loom crankshaft arrangement - Google Patents

Loom crankshaft arrangement Download PDF

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Publication number
US3441058A
US3441058A US590705A US3441058DA US3441058A US 3441058 A US3441058 A US 3441058A US 590705 A US590705 A US 590705A US 3441058D A US3441058D A US 3441058DA US 3441058 A US3441058 A US 3441058A
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US
United States
Prior art keywords
slay
crankshaft
loom
drive shaft
frame
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 - Lifetime
Application number
US590705A
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English (en)
Inventor
Friedrich Wilhelm Bassing
Gottfried Gerhard Wilh Hofmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GOTTFRIED GERHARD WILHELM HOFM
Original Assignee
GOTTFRIED GERHARD WILHELM HOFM
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GOTTFRIED GERHARD WILHELM HOFM filed Critical GOTTFRIED GERHARD WILHELM HOFM
Application granted granted Critical
Publication of US3441058A publication Critical patent/US3441058A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/02—Construction of loom framework
    • D03D49/025—Ground supports
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/02—General arrangements of driving mechanism

Definitions

  • the invention refers to looms having a slay driven by a crankshaft with more than two cranks.
  • a further substantial disadvantage of such slay connecting means is the limitation of free space for the downward motion of the harness. This refers especially to looms with an open-shed dobby, because one or several harness frames remain in bottom position during beat-up, and this means a limitation of the number of harness frames to be used.
  • a drive shaft which drives a crankshaft, and rotates at the same speed or at a multiple of its speed and which could carry the picking cams.
  • the centre frames can be of box type construction, housing the cranks 12a with crank arms 13 and the bottom pulleys 23 for the motion of harness 8. These centre frames have mounting surfaces 2c at their rear end for the back rest supports and further surfaces to carry the frame cross beams, and their sides are provided to take the bearings for the crankshaft, the drive shaft and the slay sword pivots.
  • FIG. 1 is a cross-section of the loom, showing a side view of one centre frame assembly
  • FIG. 2 is a view of the drive side of the main frame as viewed from the outside, and
  • FIG. 3 is a perspective illustration of one centre frame assembly, indicating the attached cross loom components in chain-dotted lines.
  • the main side frames 1 (see FIG. 1) and one centre frame 2 or several centre frames 2 are connected by the cross beam 3, the front rest or breast beam 4 and the superstructure 5.
  • the warp K is supplied from the warp beam 6, passes over the back rest 7, through the heddle eyes of the harness 8 and through the reed 9 which is mounted on the race plate 10 of the slay.
  • the crankshaft 12 is located between the front harness frame 8a and the race plate 10 and drives the slay by means of crank arms 13.
  • the race plate 10 is a horizontal beam carried by the slay swords 14 mounted on swivel pivots 14a.
  • the crankshaft 12 is driven by the drive shaft 15.
  • This drive shaft 15 - (see FIG. 2) is driven by an electric motor over a reduction gear transmission, both not shown in the drawings.
  • a gear 16' on drive shaft 15 drives the intermediate gear 17 which is carried by a stud shaft 18 in side frame 1.
  • intermediate gear '17 drives the gear 19 on the crankshaft 12.
  • the gears 16 and 19 have an equal number of teeth.
  • the gear 16 has correspondingly less teeth than the gear 19 on crankshaft 12.
  • the picking cams 20, for actuating a pick controlling motion of known principle which is not shown, may be carried by the drive shaft 15.
  • the box type construction of a centre frame 2 is illustrated in FIG.
  • FIG. 3 shows the crank link 13 which is pivoted directly at the level of the race plate 10 to the slay sword 14 with its support 14b for the race plate 10 which is located at substantially the same level as the crank shaft 12.
  • the rear section of the centre frame 2 carries a bearing 22 for the drive shaft 15, if the crankshaft 12 of a wide loom is driven from both ends, and the surface 20 for mounting the back rest supports which are not shown. Finally the bottom section of centre frame 2 carries the bottom pulleys 23 for the motion of the harness 8.
  • the side walls 2a and 2b have locating surfaces 2d and 2e, bores (2 to support the cross beams 3, and on the front side of the centre frame 2 the locating surface 2g for front rest 4 is provided.
  • the centre frame 2 can be preassembled as indicated by solid lines.
  • FIG. 3 illustrates in chain dotted lines how the cross beams 3, the crankshaft 12, the drive shaft 15, the slay swords 14, the race plate 10 and the front rest 4 are mounted.
  • the weight of driven slay parts is considerably reduced which consequently results in reduction of vibration caused by acceleration of a great mass.
  • the connecting pivots between the crank links 13 and the slay swords 14 are arranged at a relatively large distance from slay foot pivot (14a for a very favourable and short transmission of power. This is an advantageous way of obtaining more beat-up power than with all conventional slay drives.
  • the drive shaft 15, extending over the full loom width allows to drive the crankshaft 12 from both ends, which then can be of smaller diameter than a cna-nkshaft 12 that is driven from one end only.
  • the drive shaft 15 can transmit the more power under constant load the faster it rotates compared to speed of crankshaft 12.
  • Pick controlling earns 20, fitted to the drive shaft 15, may have lugs which have the larger a radius curvature the faster the drive shaft 15 rotates compared to the speed of crankshaft 12.
  • the box type construction of the centre frames 2 has the advantage of pre-assembling to provide complete units for the final assembly of looms.
  • the embodiment disclosed in the description and shown in the attached drawings gives only one example of the invention. Structural details can vary without departing from the concept of the present invention. So it might be conceivable for instance that the loom is built without superstructure or the drive shaft 15 could be located in front of or underneath of harness frames.
  • a loom comprising a supporting frame; harness frame means; a slay mounted in front of said h arness frame means for oscillating movement and including slay swords and a race plate between the same; a cnank shaft mounted on said supporting frame in front of said harness frame means between the same and said race plate at the level of the latter and extending parallel to said race plate, said crank shaft h aving crank arms; and links located at said level rearward of said slay and having ends pivotally connected with said crank arms and said slay swords at the level of said race plate whereby the space forwardly of said slay, rearwardly of said crank Sllflft and below said level is free, and said crank shaft is spaced a short distance from said slay for the transmission of power.
  • said slay comprises more than two slay swords and comprising a drive shaft mounted on said supporting frame rearward of said harness frames and extending parallel to said race plate and crank shaft over the entire width of the loom; and transmission means connecting both end portions of said drive shaft with both end portions of said drive shaft, respectively.
  • a loom as claimed in claim 2 comprising pick controlling cams at said end portions of said drive shaft.
  • said supporting frame includes lat least one center frame housing comprising side walls through which said crank shaft and said drive shaft pass so that at least the portion of said crank shaft having said crank arms is enveloped by said housing; bearings for said crank shaft and said drive shaft in said side walls; pivot means on said side walls for supporting said slay swords for angular movement; and abutment means on said housing for supporting the breast beam and the back rest of the loom.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Transmission Devices (AREA)
US590705A 1965-11-05 1966-10-31 Loom crankshaft arrangement Expired - Lifetime US3441058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0084392 1965-11-05

Publications (1)

Publication Number Publication Date
US3441058A true US3441058A (en) 1969-04-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
US590705A Expired - Lifetime US3441058A (en) 1965-11-05 1966-10-31 Loom crankshaft arrangement

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US (1) US3441058A (is")
BE (1) BE689238A (is")
GB (1) GB1118058A (is")
SE (1) SE315252B (is")

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955603A (en) * 1973-08-23 1976-05-11 Societe Alsacienne De Constructions Mecaniques De Mulhouse Looms provided with means for making movement thereof uniform
US20210381139A1 (en) * 2020-06-04 2021-12-09 Tsudakoma Kogyo Kabushiki Kaisha Loom
US20210381138A1 (en) * 2020-06-04 2021-12-09 Tsudakoma Kogyo Kabushiki Kaisha Loom
US20210381137A1 (en) * 2020-06-04 2021-12-09 Tsudakoma Kogyo Kabushiki Kaisha Loom
US20240167202A1 (en) * 2022-11-22 2024-05-23 Tsudakoma Kogyo Kabushiki Kaisha Intermediate receiving mechanism for warp beam in loom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS239253B1 (en) * 1983-03-28 1986-01-16 Jiri Novak Weaving machine frame

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US744843A (en) * 1903-05-15 1903-11-24 Gilbert & Bennett Mfg Company Batten-operating mechanism for looms.
US873606A (en) * 1907-05-02 1907-12-10 Draper Co Lay-motion for looms.
US1714112A (en) * 1928-04-27 1929-05-21 Bigelow Hartford Carpet Compan Loom
US2504939A (en) * 1946-11-21 1950-04-18 Draper Corp Loom frame and parts
US2533128A (en) * 1946-08-17 1950-12-05 Steel And Alloy Tank Company Loom frame
US2835276A (en) * 1955-03-31 1958-05-20 Yvonne B Hunt Loom frames

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US744843A (en) * 1903-05-15 1903-11-24 Gilbert & Bennett Mfg Company Batten-operating mechanism for looms.
US873606A (en) * 1907-05-02 1907-12-10 Draper Co Lay-motion for looms.
US1714112A (en) * 1928-04-27 1929-05-21 Bigelow Hartford Carpet Compan Loom
US2533128A (en) * 1946-08-17 1950-12-05 Steel And Alloy Tank Company Loom frame
US2504939A (en) * 1946-11-21 1950-04-18 Draper Corp Loom frame and parts
US2835276A (en) * 1955-03-31 1958-05-20 Yvonne B Hunt Loom frames

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955603A (en) * 1973-08-23 1976-05-11 Societe Alsacienne De Constructions Mecaniques De Mulhouse Looms provided with means for making movement thereof uniform
US20210381139A1 (en) * 2020-06-04 2021-12-09 Tsudakoma Kogyo Kabushiki Kaisha Loom
US20210381138A1 (en) * 2020-06-04 2021-12-09 Tsudakoma Kogyo Kabushiki Kaisha Loom
US20210381137A1 (en) * 2020-06-04 2021-12-09 Tsudakoma Kogyo Kabushiki Kaisha Loom
US11591724B2 (en) * 2020-06-04 2023-02-28 Tsudakoma Kogyo Kabushiki Kaisha Loom
US11732389B2 (en) * 2020-06-04 2023-08-22 Tsudakoma Kogyo Kabushiki Kaisha Loom
US11753753B2 (en) * 2020-06-04 2023-09-12 Tsudakoma Kogyo Kabushiki Kaisha Loom
US20240167202A1 (en) * 2022-11-22 2024-05-23 Tsudakoma Kogyo Kabushiki Kaisha Intermediate receiving mechanism for warp beam in loom
US12286730B2 (en) * 2022-11-22 2025-04-29 Tsudakoma Kogyo Kabushiki Kaisha Intermediate receiving mechanism for warp beam in loom

Also Published As

Publication number Publication date
GB1118058A (en) 1968-06-26
BE689238A (is") 1967-04-14
SE315252B (is") 1969-09-22

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