US2193454A - Ribbon loom - Google Patents

Description

March l2, 1940. w had-@Rus` 2,193,454

RIBBON LOOM Filed June 26, 1939 INVENTOR, Wntliam Huff/g' BY l ATTORNEY.

Patented Mar. 12, 1940v William Harris, Paterson, N. J.

Application June 26, 1939, Serial No. 281,113

6 Claims.

In a well-linown type of loom, as a ribbon loom., a rack reciprocatory lengthwise of and in the back-and-forth-movable batten drives the shuttles, as through pinions. A system to transmit reciprocation to the rack includes flexible connections, as straps, and a rotary guiding means housed within with its axis substantially horizontal and crossing the hatten and up to which said connections extend and around which 110 in opposite directions they then extend and exist attached to the rack. Suitable means, removed from the hatten, as a suitably and constantly rotated double-crank to which the connections are respectively connected at opposite sides of its axis oi' rotation, imparts pulls to said conneciziens independently of each other and in alternation, that is to say, so that a pull is exerted on one connection or the other each time the hatten structure is back and the war-p sheds '0 open to receive the shuttles.

The construction is such that, since said connections reach up into the space in the batten in which said guiding means is located and since said space is necessarily of limited width and taking into account the back and forth movements of the betten relatively to a guide for said connections having xed location, as on the licor near the lay-swords for supporting the batten, the connections in their own back and forth 230 travel wipe against the hatten and so become chafed and sooner or later cease to be any longer serviceable and have to be replaced by new ones. rlhe object of this invention is so to improve the construction of a loom of this type as to 5 eliminate all contact of the lengthwise traveling connections with any relatively xed part of the satten structure and the consequent wear thereof.

in the drawing:

Fig. l is a side elevation of so much of the 40 improved loom as is necessary for the purpose of illustrating the invention;

Fig. 2 is a. front elevation, partly in section, of that end of the hatten structure to which the invention is applied, showing certain parts 45 present in accordance with the invention; and

Fig. 3 shows the rack and said guiding means in section and portions of said connections in elevation.

The batten structure includes, as usual, the

so hatten l, supported by lay-swords a so as to be movable forward or to the right and back, and a top rail 2 parallel with the batteri and which is supported b-y end walls, such as 3, and by the usual spaced blocks, not shown, in the grooves 55 of which the shuttles are guided and move.

CFI

In grooves il in the betten and rail is reciprocatory the rack which here comprises racks proper 5 in the respective grooves `and lapped plates 'd .secured to the respective racks proper land held Atogether by a clamp l and screws la. -5

'The mentioned system, including the rotary guiding means and the iiexible connections, is as follows: A cylinder t free to rotatearound an axis substantially yhorizontal and crossing said batteri structure here constitutes said guiding i0 means; it is jcurnaled on a shaft il xed in brackets lil uf'hich are themselves fixed to the front and back `faces lof and upstand kfrom the hatten, ysaid shaft and brackets thus forming parts of the batteri structure. Straps ll consti t5 tute the said flexible connections. They extend in an up-and-down direction (here downwardly) to said guiding .means and then around the same in opposite directions and exist attached to the rack, as `at Ha. 2G

Means is .provided to maintain the connect-,ions clear of the batten structure between the medium (to be referred to) which exerts pulls on them and the guiding means t, thereby to eliminate wear of the connections as they travel lengthwise in response to such pulls and also partake in theback and forth movements of said structure, as follows: A pair of independently rotative members is indicated at i3, each having its axis extending lengthwise of the rack and hence crossing the axis of the .guiding means 8. For supporting these members the hatten structure includes brackets i4 afxed to the back of the hatten and upstanding above rail 2 and aixed 'to the brackets at l5 a shaft It on which 35 said members are directly journaled, the latter being confined against axial displacement in any way, as by collars Il fast to the shaft. The said members are oi' such diameter as to project forwardly beyond the rail 2 and rearwardly well 40 beyond the back of the batten structure.

The connections extend up behind the batteri structure, then in bights or bends over said members I3 and then down to guiding means t.

The medium for exerting pulls on said connections independently of each other and alternately may be of well-known type, say cons-isting of the usual double-crank I8 to diametrically opposite points of which the ends of the connections are attached, the same being suitably journaled and rotated constantly substantially as in the pat-ent to Sands, No. 1,138,418. 2|] is suitable guiding means, asrollers journaled in a stand 2l fixed to the floor near the lay-swords,

around which, between the double-crank and the members I3, the connections extend.

So as not to chafe or override each other the portions of the connections which reach from said members I3 to the guiding means 8 should extend around the latter in diierent upright planes. Hence the construction is such that one member reaches further than the other crosswise of the rack, as shown in Fig. 1; said members being here journaled on a common axis, one is for this purpose formed of greater diameter than the other.

As will be evident, my construction avoids all contact of the connections li with relatively fixed parts as they travel in response to the pulls exerted thereon and partake of the back and forth movements of the batten structure, and it is also such as to avoid the straps overriding or chai'ing each other.

I do not wish to be limited to the precise construction herein shown, what I claim being:

l. In a loom of the class described, the combination of a back-and-forth-movable hatten structure, a shuttle-driving rack reciprocatory therein lengthwise thereof, a system to transmit reciprocation to the rack including fiexible connections and a rotary guiding means journaled in said structure with its axis substantially horizontal and crossing said structure and to which means said connections extend in an up-anddown direction and around which they then extend and exist attached to the rack, means, removed from said structure, to exert pulls on said connections independently of each other and alternately, and means to maintain said connections clear of said structure between the lastnamed means and said guiding means including two independently rotative members journaled each on an axis extending lengthwise of the rack and in peripheral engagement with which, respectively, said connections extend, one member reaching further than the other in one hori- Zontal direction crosswise of the rack, whereby the portions of said connections which reach from said members to said guiding means extend around the latter in diierent upright planes.

2. The combination set forth in claim 1 characterized by said members being journaled on a common axis.

3. The combination set forth in claim 1 characterized by said members being journaled on a common axis and being of different diameters.

4. In a loom of the class described, the combination of a back-and-forth-movable batten structure, a train of parts movable back and forth in said structure including a rack conned thereto to move lengthwise thereof and rotary means journaled in said structure with its axis crosswise thereof and substantially horizontal, iiexble connections extending in an up and down direction to and in opposite directions around said rotary means and connected to a part of said train, means, removed from said structure, to exert pull on the connections independently of each other and alternately, and means to maintain said connections clear of said structure between the last-named means and said rotary means including two independently rotative members journaled each on an axis extending lengthwise of the rack and in peripheral engagement with which, respectively, said connections extend, one member reaching further than the other in one horizontal direction crosswise of the rack, whereby the portions of said connections which reach from said members to said guiding means extend around the latter in different upright planes.

5. The combination set forth in claim 4 characterized by said members being journaled on a common axis.

6. The combination set forth in claim 4 characterized by said members being journaled on a common axis and being of different diameters.

` WILLIAM HARRIS.

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