US2106919A

US2106919A - Needle bed construction

Info

Publication number: US2106919A
Application number: US53704A
Authority: US
Inventors: Robaczynski Ladislaus
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-12-10
Filing date: 1935-12-10
Publication date: 1938-02-01
Anticipated expiration: 1955-02-01

Description

Feb. 1, 1938. 1.. ROBACZYNSK] NEEDLE BED CONSTRUCTION Filed Dec. 10, 1935 ZA0/J4A0J' @05ACZY/1 J/fl INVENTOR.

ATTORNEYS.

Patented Feb. 1, 1938 UNITED STATES PATIENT OFFICE 7 Claims.

This invention relates to new and useful improvements in knitting machines, and more particularly it pertains to a novel construction of needle bed therefor.

'5 A needle bed or plate for knitting machines, particularly of the, links-links type, consists of a relatively long and narrow body portion on which is suitably formed a plurality of spaced upstanding ribs. This construction provides a plu- 10 rality of channels or grooves between the ribs, which channels or grooves form slideways for needles and needle jacks.

In actual practice, it has been found necessary to employ some means to retain the needles and 15 needle jacks in position in the channels or grooves, particularly against a tendency to rise out of them when they are moved therealong. This retaining means generally consists of a re taining strip which extends lengthwise of the needle bed or plate and. overlies the channels or grooves. The needles and jacks lie beneath this retaining strip and are prevented thereby from displacement relatively to the channels or grooves. In the most commonly employed construction, 25 the top face or edge of the ribs is cut away to provide a seat for the retaining strip and the side walls of this seat are undercut in such a manner that in effect, a channel which is of dovetail cross-sectional shape is formed, which channel 30 extends throughout the length of the needle bed or plate. In assembling such a construction, one end of the retaining strip, which has beveled side edges, is inserted into one end of the dovetail channel and the strip is driven home, it being in '35 its proper operative position when it is entirely received within the dovetail channel.

The retaining strip, by reason of its extreme length, was of a more or lessfiexible nature and either its placement in operative position or its 40 removal therefrom, was not easily accomplished and often serious damage to one or another of the parts resulted from such operations.

It is the primary object of this invention to simplify the construction of this particular portion of a knitting machine bed, and more particularly, to render more easily accomplished, the placement and removal of the retaining strip to and from its operative position.

A feature of the invention resides in a novel construction whereby the retaining strip per se assumes its operative position immediately it is placed upon the needle bed, it not being necessary to impart any degree of longitudinal movement thereto as is necessary in the heretofore employed construction.

application filed by me, December 13,

A further feature of the invention resides in a novel form of fastening means for securing the retaining strip in position, which fastening means is also so constructed as to provide the necessary rigidity to prevent buckling or other distortion of 5 the retaining strip,

A still further feature of the invention resides in a novel construction whereby the several parts may be readily and easily assembled or disassembled without danger of injury thereto.

Other features of the invention relate to certain novel and improved constructions, arrangements and combinations of parts hereinafter described and particularly pointed out in the claims, the advantages of which will be readily understood 5 and appreciated by those skilled in the art.

The invention will be clearly understood from the accompanying drawing illustrating the invention in its preferred form and the following detailed description. of the constructions therein shown.

In the accompanying drawing,

Figure 1 is a fragmentary top plan View of a needle bed and retaining strip constructed in accordance with the present invention,

Figure 2 is a transverse sectional view on a slightly enlarged scale taken substantially on the line 22 of Figure 1, and;

Figure 3 is a distended fragmentary perspective view on an enlarged scale showing a section of the needle bed, the retaining strip and fastening member.

The needle bed which is designated It] consists of arelatively long narrow member. The reference character I2 designates a comb plate which, although herein shown as of special construction, constitutes the subject matter of a co-pending 1935 Serial No. 54,185.

The needle bed or plate is formed with a plurality of spaced ribs It which form intervening channels I6. These channels it provide slideways for needle jacks and needles, the latter, in the present instance, being illustrated as of the double latch type. Machines of the type with which the needle bed of the present application is particularly intended for use, employ two such needle beds. and the needles are transferable from one bed to the other during the knitting operation.

In the present embodiment of the invention, the ribs H! are cut out as designated at I8 in Figure 3 to provide a seat extending lengthwise of the needle bed or plate, said seat having but a single rear wall. This wall is designated 20and, as

terminate short of the ends if desired, so long as it overlies all of the channels IS. The retaining strip 26 is provided with a plurality of elongated openings 28 which are spaced from each other a distance equal to the spaces between the lugs 22, heretofore mentioned. These openings 28 are elongated in a direction transversely of the retaining strip 25 and are adapted to receive the lugs 22 in a manner which will permit of lateral movement of the retaining strip relative to its seat l8.

The retaining strip 26 is adapted to overlie the slideways formed by the channels [6 between the ribs l4 at a point adjacent the front edge of the needle bed and at a point where the needle jacks, which are designated 30, connect with the needles, which are designated 32, as best illustrated in Figure 2 of the drawing to prevent displacement or disconnection of the needle jacks and needles during the knitting operation.

Means is provided to secure the retaining strip in position upon the needle bed, and this means preferably consists of a relatively flat strip of metal 34 adapted to be received on top of the retaining strip 26. This fastening member 34 has beveled side edges 35 and 3B which are adapted to cooperate with the undercut wall 20 of the seat l8 and the undercut walls 24 of the lugs 22 to lock the fastening member in position beneath the wall 20 and said lugs. The forward edge of the fastening member 34 is provided with a series of notches 40, which notches are spaced a distance equal to the distance between the lugs 22 in such manner that the fastening member 34 may be placed upon the upper face of the retaining strip 26, with the notches in registration with the lugs 22, it being understood that the retaining strip is first positioned with the lugs 22 within the elongated openings 28. The fastening member, having been positioned as above described, may now be moved longitudinally of the retaining strip 26, whereupon the forward beveled edge 36 of the fastening member will pass beneath the angular walls 24 of the lugs 22 to a position in which the fastening member 34 is shown in Figure 1. This position of the fastening member will hold the retaining strip firmly to its seat I8 and lend rigidity to the assembled parts. The fastening member 34 may be provided with a rib 46 which extends throughout the major portion of the length thereof and serves to strengthen the fastening member 34.

To insure against movement of the parts, a screw or similar securing means 48 may be passed through the fastening member 34 and the retaining strip 26 into threaded engagement with a threaded opening, not shown, in the needle bed or plate 10.

From the foregoing it will be apparent that the present invention provides a new and novel construction of needle and needle jack retaining means for the needle beds of knitting machines in which the parts may be readily assembled and.

disassembled without danger of damage thereto, as distinguished from the generally employed construction heretofore described.

While the present invention has been herein illustrated in its preferred form, it will be obvious that it may be practiced in other forms without departing from the scope of the appended claims.

Having thus described the invention, what is claimed as new, is:

1. A knitting machine needle bed comprising a body portion, spaced ribs on the body portion forming intervening channels for needles and needle jacks, and means for preventing displacement of needles and needle jacks relative to the channels, said means comprising a retaining strip overlying said ribs and intervening channels, said retaining strip having spaced openings therein, lugs projecting from certain of said ribs and adapted for reception in'the spaced openings, of the retaining strip to position thesame relative to the bed, and means having engagement with said projecting lugs for securing the retaining strip in position on the needle bed.

'2. A knitting machine needle bed comprising a body portion, spaced ribs on the bodyjportion forming intervening channels for needles and needle jacks, and. means for preventing displacement of needles and needle jacks relative to said channels, said means comprising a retaining strip overlyingsaid ribs and intervening channels, said retaining strip having spaced openings therein, lugs projecting from certain of said ribs and adapted for reception in the spaced openings of the retaining strip to position the same relative to the bed, and a fastening member adapted to overlie said retaining strip and have interengagement with said lugs to secure the retaining strip to the needle bed.

3.. A knitting machine needle bed comprising a body portion, spaced ribs on the body portion forming intervening channels for needles and needle jacks, and means for preventing displacement of needles and needle jacks relative to said channels, said means comprising a retaining strip overlying said ribs and intervening channels, said retaining strip having spaced openings therein, lugs projecting from certain of said ribs and adapted for reception in the spaced openings of the retaining strip to position the same relative to the bed, and a fastening member, said fastening member comprising a relatively narrow strip, a notched flange defining one edge thereof the notches 'in said flange cooperating with the aforementioned lugs to permit of operatively positioning the fastening member, said fastening member being adapted to overlie the retaining strip with its flange inengagement with said lugs.

4. A knitting machine needlebed comprising a body portion, spaced ribs on the body portion forming intervening channels for needles and needle jacks, said spaced ribs having a seat formed in their upper edges, the rear wall of which is undercut and means for preventing dis-' placement of needles and needle jacks relative to said channels, said means comprising a retaining strip overlying said channels, said retaining strip having spaced openings therein, lugs projecting from certain of said ribs, said lugs having an undercut wall, and said lugs being adapted for reception in the openings of the retaining strip when it is in position on the needle bed, and meansslidable beneath the undercut walls of the lugs and the rear undercut wall of the seat .and'

upon the upper face of the retaining strip for securing the retaining strip in position, said means having beveled opposite side edges.

5. A knitting machine needle bed comprising a body portion, spaced ribs on the body portion forming intervening channels for needles and needle jacks, said spaced ribs having a seat formed in their upper edges, the rear wall of which is undercut and means for preventing displacement of needles and needle jacks relative to said channels, said means comprising a retaining strip overlying said channels, said retaining strip having spaced openings therein, lugs projecting from certain of said ribs, said lugs having an undercut wall, and said lugs being adapted for reception in the openings of the retaining strip when it is in position on the needle bed, and means slidable beneath the undercut walls of the lugs and the rear undercut wall of the seat and upon the upper face of the retaining strip for securing the retaining strip in position, said means comprising a rigid bar, and a flange extending along one edge thereof, the opposite sides of said bar being beveled.

6. A knitting machine needle bed comprising a body portion, spaced ribs on the body portion forming intervening channels for needles and needle jacks, said spaced ribs having a seat formed in their upper edges, the rear wall of which is undercut and means for preventing displacement of needles and needle jacks relative to said channels, said means comprising a retaining strip overlying said channels, said retaining strip having spaced openings therein, lugs projecting from certain of said ribs, said lugs having an undercut wall, and said lugs being adapted for reception in the openings of the retaining strip when it is in position on the needle bed, and. means slidable beneath the undercut walls of the lugs and the rear undercut wall of the seat and upon the upper face of the retaining strip for securing the retaining strip in position, said means comprising a rigid bar, a notched flange defining one edge of said rigid bar, said rigid bar being adapted to be placed with its notches in registration with said lugs and moved longitudinally of the needle bed to position the flange beneath the undercut walls of the lugs, and the seat, said rigid bar having beveled side edges.

7. A knitting machine needle bed comprising a body portion, spaced ribs on the body portion forming intervening channels for needles and needle jacks, said spaced ribs having a seat formed in their upper edges, the rear wall of which is undercut and means for preventing displacement of needles and needle jacks relative to said channels, said means comprising a retaining strip overlying said channels, said retaining strip having spaced openings therein, lugs projecting from certain of said ribs, said lugs having an undercut wall, and said lugs being adapted for reception in the openings of the retaining strip when it is in position on the needle bed, and means slidable beneath the undercut walls of the lugs and the rear undercut wall of the seat and upon the upper face of the retaining strip for securing the, retaining strip in position, said means comprising a rigid bar, having opposite beveled side edges, one of which is notched, said rigid bar being adapted to be placed with its notches in registration with said lugs and moved longitudinally of the needle bed with the corresponding beveled edge of the flange passing beneath and having engagement with the undercut walls of said lugs.

LADISLAUS ROBACZYNSIQ.