Textiles: weaving – Warp manipulation – Shedding
Patent
1992-06-01
1994-07-26
Falik, Andrew M.
Textiles: weaving
Warp manipulation
Shedding
411103, 403346, D03C 906
Patent
active
053320069
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is relates to a center connector, particularly for metallic weaving shafts. A center connector for a weaving shaft is known having a round rod whose lower end, which is provided with a thread, can be screwed on at the lower shaft rod up to a stop and which is guided through the upper shaft rod and can likewise be anchored at the upper longitudinal side of the upper shaft rod so as to be detachable.
A center connector having the aforementioned features for weaving shafts has already been used. However, it has the advantage that it is provided with a stop and fastening collar which can be connected directly with the upper shaft rod, the length of the stop and fastening collar being substantially greater than the thickness of the shaft rod. This results in the disadvantage that the center connector in a weaving shaft connection can no longer be detached because the fastening collar of the center connector rod would strike against adjacent weaving shafts when detaching. However, the use of warp thread draw-in machines requires that the center connector be detached when weaving shafts are inserted in the weaving machine.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a center connector in such a way that it can easily be removed from the weaving shaft, even when the weaving shaft is arranged in a weaving shaft connection of a weaving machine, but without the spacing function of the center connector being impaired for this reason.
The proposed object is met according to the invention in a center connector of the above-described type in which the upper end of the center connector rod has means for engaging a screwdriver or socket wrench and has a stop collar which is rigidly connected with it and adjoins this engagement region, and in that the engagement region and the stop collar can be covered by a cap having recesses for these parts and through-holes at both sides of the center connector rod for clamping screws which can be anchored at the upper weaving shaft and ensure that the stop collar rests against the upper weaving shaft. It is advisable that the diameter of the stop collar be selected in such a way that it corresponds at most to the thickness of the upper shaft rod.
On the one hand, the cap enables the contact of the stop collar, which is important for a dimensionally accurate spacing of the upper weaving shaft from the lower weaving shaft. On the other hand, it prevents access to the upper end of the center connector rod. When the center connector rod is to be removed, the cap is first removed after loosening the clamping screws, then the center connector rod is unscrewed from the lower shaft rod at its exposed upper end and finally removed from above through the upper shaft rod. The clamping screws can be loosened and the center connector rod unscrewed either by a screwdriver directed from above against the narrow upper longitudinal side of the upper shaft rod or by a socket wrench which can likewise be applied from above, neither of which is impeded by adjacent weaving shafts. The reinsertion of the center connector rod is effected in the reverse order. The upper weaving shaft can advantageously be provided on its upper longitudinal side with a stop plate for the stop collar at the location where the center connector rod is guided through, which stop plate has a through-hole for the center connector rod and threaded through-holes for the clamping screws of the cover cap. Such a stop plate can ensure a more stable anchoring of the clamping screws e.g. than the wall of a shaft rod in the form of a light metal hollow-section rod.
The novel features which are considered as characteristic of 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 detailed description of specific embodiments when read in connection with the accompanying drawing
REFERENCES:
patent: 1637796 (1927-08-01), Andrews
patent: 1645571 (1927-10-01), Andrews
patent: 3889721 (1975-06-01), Wagner
patent: 4658864 (1987-04-01), Goodman, Jr.
patent: 5082031 (1992-06-01), Suhr
Falik Andrew M.
Grob & Co Ltd.
Striker Michael J.
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