US2968447A

US2968447A - Lap pin ejector

Info

Publication number: US2968447A
Application number: US532884A
Authority: US
Inventors: Herbert H Neuman
Original assignee: Blackstone Inc USA
Current assignee: Blackstone Inc USA
Priority date: 1955-09-07
Filing date: 1955-09-07
Publication date: 1961-01-17
Anticipated expiration: 1978-01-17

Description

H. H. NEUMAN LAP PIN EJECTOR Jan. 17, 1961 2 Sheets-Sheet 1 Filed Sept. 7, 1955 PJJ s H. H.'NE UMAN LAP PIN EJECTOR Jan. 17, 1961 Filed sept. 7, 1955 2 Sheets-Sheet 2 United States Patent LAP PIN EJECTOR Herbert H. Neuman, Manchester, NH., assigner to Blackstone, Inc., Manchester, N.H., a corporation of Delaware Filed Sept. 7, 1955, Ser. No. 532,884

2 Claims. (Cl. 242-55.1)

This invention relates to textile machinery and more especially to lap forming machines generally known as pickers 4 lCustomarily textile Afibers whether natural or artificial are formed into a lap and wound on a lap pin in the form of a lap roll approximately 3 feet long and varying in diameter in preparation for mounting at the feed-in end of. a carding machine. The lap pin is free to rise as the diameter ofthe roll increases and when'the lap reaches a predetermined kdiameter the machine is automatically brought to a stop. The lap pin is a hollow bar of considerable size and weight, having a handle at one end and when the lap reaches the desired size and the machine has stopped the voperator inserts a lap rod through the openend of the lap pin, which rod is long enough to extend clear through the lap roll, and then grasps the handle of the lap pin at the opposite end and by a strong pull withdraws it from the core of the lap roll, leaving the lap rod in its place with its end projecting from the ends of the lap roll'. VThe operator then grasps the ends of the lap rod, lifts the roll clear of the machine and places it on a rack for storage by setting the ends of the rod on spaced brackets. The lap pin is then replaced in the machine and another lap roll is wound.

The principal objects of this invention are to provide means to facilitate removing the lap pin from the wound lap roll, thereby to lessen the labor required to perform this operation; to effect a removal of the pin with the least amount of axial displacement of the core of the lap; to provide means for removing the lap pin and leaving the lap rod in place, which will not necessitate changing the structure of the machine or disturb its operation; to provide a device which Will facilitate removal of the lap rod, which is adapted to be employed with any type of picker lap machine; which is dependable, economicaly and does not require special skill in its operation.

As herein illustrated the device is an ejector mounted opposite the end of the lap pin, which is open, at a level corresponding substantially to the level that the lap pin will have when the desired amount of lap is wound thereon and ready for dofling. The ejector is in the form of apower operated hammer or piston movable toward the end of the lap rod within the lap pin and through it to impart a sharp blow to the lap pin and thus` dislodge it from the core of' the lap roll, so that an operator stationed at the opposite. end of the roll and pulling simultaneously on the handle .of the .lap pin may withdraw the pin easily. Preferably the ejector is a pneumatically o-perated piston and there is a control valve on the oor at the end of the roll from which the handle projects, which the operator may step on to actuate the piston and cause the head to strike the lap rod at the same time heV pulls on the handle of the lap pin. In this type of machine there are loggerheads mounted at the ends of the lap pin which'risev with it to control the density of the lap., To retain the lap rod within the lap pin during rotation of the pin, while the lap is building up, a latch is mounted on the loggerhead at the open end of the lap pim which isV spaced from the endof the pin by at least the thickness of the head, and which may be lifted to permit thrusting the rod intoA the pin but when released A2,968,447 Fenfedfe 177-1961 ICCv 2 willgravitatel downwardly and stay in a lowered position across the head of the rod. i

The invention will now be described in greater' detail with reference to the accompanying drawings wherein:

Fig. 1 is a front view of the machine with the loggerheads raised and showing the lap and lap pin' partly in section;

Fig. 2 is an end elevation as seen from the left end of Fig. l with the ejector omitted; a

Fig. 3 is an end elevation as seen from the left end of Fig. 1;

Fig. 4 is a side view of the machine as seen from the right side of Fig. l; and

Fig. 5 is a plan view of the lap rod.

Referring to the drawings, particularly Figs. 1 and 4, the machine has a frame 10 vand a drive shaft 12 journaled in a lever 14 which is pivoted at 16 to the frame 10 or a bracket bolted thereto. The drive shaft 12 carries a belt pulley 18 and a gear 20 meshing with a gear 22 from which the various moving parts of the machine are driven in the usual manner. e

A pair of support rollers 24 arranged transversely of the machine support the lap' 26 as it is wound on the lap pin 28 in conventional fashion. Loggerheads 30 at the upper ends of rack bars 32 yieldably resist upward movement of the lap pin as the lap is wound thereon to maintain a predetermined density; Restraint on upward movement of the Vrack bars may be of any suitable form Vand as herein illustrated comprises a gear 34 on a shaft 36 meshing with a gear 38 on a shaft 40 provided with a brake wheel 42 which cooperates with a brake shoe 44.

The machine is provided with a conventional stop motion, such as' shown in' the Rogers Patent No. 1,037,327, so that when the lap roll reaches a predetermined diameter the` machine will automatically stop. As there shown the lever 14 is supported in a position to maintain engagement of the

gears

20 and 22 by means of a spring pressed bolt 46 the left end of which rests on a bracket 47 on the machine frame. ,Y The bolt 46 is pro vided witha projecting lug 4S' which is engaged by a knock oi lever S0 pivoted at 52 to the frame 10. Movement of the knock off lever 50 to the right in engagement with the lug 48 moves the bolt 46 to the right so as to disengage its left end from the bracket 47 and hence to, permit the lever 14 to drop and disengage the

gears

20 and 22. Movement of the knock olf lever 50 may be eifected in any suitable manner as the loggerheads rise with the increase in diameter of the roll to stop the machine when a predetermined diameter is reached; In the Rogers Patent 1,037,327, which illustrates the mechanism and from which a more detailed account of the operation may be had, the movement of the knock oli lever 50 is effected electrically, however, mechanical means may be employed as is old in the art.

When the machine stops, as related above, the loggerheads are elevated to releasethe ends of the lap pin by first releasing the brake band 44 and then turning the brake wheel 42, which through the

gears

38, 34 and gears on the shaft 36, meshing with the rack bars 32, raises the racks. The lap pin has a handle 56 at its right-hand f end and an axial' bore 58 extending from its left end nearly through it. According to usual practice a lap rod 62 (Fig. 5), having a head V64 is inserted in the open end of the lap pin into the bore 58 until its head 64 engages the end of the pin; whereupon the operator` grasps the handle 56 of the pin and by giving a strong pull withdraws the pin from the core of the lap; As the pin is withdrawn the head 64 of the rod engages the left-hand end ofthe lap roll so that it is left in the core of the roll in place of the pin as the latter is removed. The lap rod is long enough so that its ends project from opposite ends of the lap roll and provides means for supporting the roll Y 3 on a rack prior to the carding operation. The lap pin is immediately replaced on the machine and a new lap started.

The lap is wound'on the lap pin, as previously pointed out, under pressure so that it requires a very strong pull on the pin to remove it from the lap roll. When an operator is taking care of a number of these machines the task of withdrawing the lap pin makes the job diicult except for a strong man.

In accordance with the invention starting and/or ejecting mechanism 54 is provided for use with this machine for the purpose of initially starting theV pin from the roll, that is overcoming the initial friction to Ywithdrawing the pin so that the operator has only to continue the withdrawal ofthe pin, which can be done very easily, leaving the rod in the lap. The ejector comprises a power operated cylinder 66 (Figs. 1 and 3) containing a piston (not shown) and a r'od 68 extending therefrom having on its outer extremity a head 70. The cylinder is mounted' on a bracket-plate 72 fastened to the frame of the machine in a horizontal position with the axis of its piston rod horizontal, at an elevation which coincides substantially with the axis of the lap pin when the latter is in its elevated position with a fully wound lap on it. Since the lap roll may be varied somewhat in diameter depending upon the material being wound on the pin the bracket-plate 72 is mounted for vertical adjustment on a bracket 7,3 and to this end is fastened thereto by bolts 74 passing through spaced parallel, vertical slots 76 in the bracket. The vertical adjustment aiorded by the slots is suiiicient to compensate for differences in roll diameter. The cylinder is double-acting, being supplied with oil or air pressure, as desired, at its opposite ends through

conductors

78 and 80 which lead to a common valve 82 controlled by a treadle 84. Since air pressure is commonly available in mills an air cylinder is preferred and as shown herein the valve 82 is provided with an air supply inlet 86. The treadle for operating the valve is located on the oor directly below the handle 56 of the lap pin so that as the operator steps on the treadle he is in a position to grasp the handle 56 and to take advantage of the initial impact on the opposite end of the rod as the cylinder is actuated to cause the head 70 at fthe end of the rod 68 to strike the left end of the lap rod. Actually the head 70 strikes the head 64 of the lap rod located within the lap pin and through it the end of the lap pin.

In practice the lap rod 62 is placed in the lap pin during the initial stages of winding the lap thereon since I it would be impossible to insert the rod after the roll reaches its final diameter because the cylinder 66 is located so close to the end of the lap pin that it would be in the way. During the build up of the lap, however, the lap pin is rotating and there is a tendency for the lap rod to work its way out of the pin so that if someone is not constantly watching the machine the lap rod may move part way out of the pin and when it reaches the level of the ejector bind against the ejector or some part thereof and bend or break the parts. Accordingly, l

there is mounted on the left-hand loggerhead 30 (Fig. 1) a right angle bracket 88, one flange of which projects outwardly at right angles to the loggerhead in a vertical plane paralleling the axis of the lap pin and has mounted on it a latch 90. The latch has slots 92 in it which are engaged over pins 94 upon whichY it is suspended and normally hangs in its lowermost position, that is with the upper ends of the slots engaged with the pins 94. When in this position and with the loggerheads engaged with the lap pin the lower end 96 of the latch occupies a position substantially opposite the head 64 of the lap rod and thus prevents the lap rod from working out of the lap pin. When it is necessary to inert the lap rod the latch is lifted suiciently to uncover the open end of the lap pin, whereupon the rod may be inserted therein, this being done early in the building of the lap on the pin. When the latch is released it automatically falls over'` theend of the rod and remains in this position as the lap is building up to its iinal diameter thus retaining the rod in place. When the lap reaches its final diameter, as previously pointed out, the machine is automatically brought to aY stop; The operator then raises the loggerheads so as to release theY lap pin andv since the latch is carried by the left-hand loggerhead it is elevated away from the lap rod. The operator then grasps the handle 56,'steps on the treadle- 84 and tugs' the lap pin which, because it has been started from the lap by the impact of the head 70 on the head 64, can be easily withdrawn from the lap, leaving the rod in its place.

It should be understood that the present disclosure is for the purpose of illustration only and that this invention includes .all modifications and equivalents which fall Within the scope of the appended claims,

I claim:

1. The combination with a picker lap machine having winding rolls, a lap pin, and loggerheads arranged yieldingly to resist vertical movement of the lap pin as the lap is wound thereon, said lap pin having an axial bore extending part way through it from one end and a handle at its opposite end, and a lap rod mounted within the bore with its inner end adjacent the inner end of the bore, and its outer end projecting from the one end of the lap pin, of a gravity actuated latch carried by one of the loggerheads and spaced axially from the projecting end of the lap pin by at least the length of the projecting end of the lap rod and normally hanging downwardly opposite the end of the lap rod for holding the lap rod within the lap pin throughout vertical movement of the lap pin as the lap is wound thereon, said latch being vertically movable to permit placing the lap rod within the lap pin, a device mounted at a level corresponding to the level that the lap pin will have when the lap is fully wound, and means for effecting operation of the device to apply a jarring force to the lap pin to dislodge it to facilitate withdrawing the lap pin from the lap leaving the lap rod therein.

2. The combination with a picker lap machine having winding rolls, a lap pin, and loggerheads arranged yieldingly toV resist vertical movement of the lap pin as the lap is wound thereon, said lap pin having an axial bore extending part way through it from one end and a handle at i-ts opposite end, and a lap rod mounted within the bore with its inner end abutting the inner end of 'the bore, and its outer end projecting from the one end of the lap pin, of a gravity actuated latch carried by one of the loggerheads and spaced axially from the projecting end of the lap pin by at least the length of the projecting end of the lap rod and normally hanging downwardly opposite the end of the rod for holding the lap rod Within the lap pin throughout vertical movement of the lap pin as the lap is wound thereon, said latch being vertically movable to permit placing the rod within the pin, an ejector mounted opposite the projecting end of the lap rod at a level corresponding to the level that the lap rod will have when the lap is fully wound, and means for effecting operation ofthe ejector to impart a sharp blow to the lap rod and Vthrough it to impart a sharp blow to the lap pin to drive it axially from the lap.

References Cited in the le of this patent UNITED STATES PATENTS 355508 Clayton Ian. 4, 1887 699,723 Swenson May 13, 1902 778,881 Mouton Jan. 3, 1905 1,037,327 Rogers Sept. 3, 1912 1,581,483 Dahlquist Apr. 20, 1926 1,588,687 Richter June 15, 1926 2,369,606 Reiners et al. Feb. 13, 1945 2,388,774 Tice Nov. 13, 1945 2,537,263 VFogleY Ian. 9, 1951