US1614847A

US1614847A - Pawl mechanism

Info

Publication number: US1614847A
Application number: US83779A
Authority: US
Inventors: Mortensen Jens; Tropp Leopold
Original assignee: Steiner Sales Co
Current assignee: Steiner Sales Co
Priority date: 1926-01-26
Filing date: 1926-01-26
Publication date: 1927-01-18
Anticipated expiration: 1944-01-18

Description

- Jan. 18', 1927. 1,614,847

' J. MORTENSEN ET AL PAWL MECHANISM Filed Jan. 26, 1926 3 Sheets-Sheet 1 an. 18 1927. 1614,847 J t J. MORTENSEN ET AL PAWL MECHANISM r Filed Jan. 26, 1926 3 Sheets$heet 2 mvsurons 1 VW I 1,614,847 1927' .1. MORTENSEN ET AL PAWL MECHANISM Filed m. 26. 1926 s Sheets-Sheet s Patented Jan. 18, 1927.

UNITED STATES PATENT OFFICE.

JENS MORTENSEN, OF FREEIORT, AND LEOPOLD TROPI, OF BROOKLYN, NEW YORK,

ASSIGNORS, BY MESNE ASSIGNMENTS, TO STEINER SALES COMPANY, A CORPORA- TION' OF UTAH.

PAWL MECHANISM.

Application filed January 26, 1926. Serial No. 83,779.

This invention relates to a new and improved feed and control mechanism for dispensing a roll of toweling so that successive portions thereof can be exposed for use outside of a cabinet in which the roll of toweling is'enclosed.

One of the objects of this invention is to provide a simple, convenient and noiseless mechanism for preventing the backward feed of the mechanism.

Another object of this invention is to devise a simple and compact form of structure in which a shield separates the clean portion orrun of the toweling from the'soiled portion thereof. Y 1

Other objects of this invention will be set w forth in the following description and drawings which illustrate a preferred embodiment of this invention, it being understood that the above general statement is intended merely to generally explain the sameand not to limit it in any manner.

Fig. 1 is a front elevation.

Fig. 2 is a section on the line 2-2 of Fig. '1. i

"Fig. 3 shows the parts illustrated in Fig. 2, but in difierent relative positions.

Fig. i is a section on the line H of Fig. 1.

Fig. 5 is a detail view illustrating the control device for preventing the backward movement of the mechanism.

F ig. 6 is a perspective view of one of the parts of themechanism. 1

The cabinet 2, which can be provided with any suitable door, is provided with 'inner side plates?) upon-which the various parts of tl'ie mechanism are mounted. The' roll of clean 'to'we'ling'T is'placed upon the b'ottom'of the cabinet 2, as shown, for example, in Fig. 4. Bars 18 and 19 are mounted'npon pivoted carriers'P and 62 which are respectivelyconnected to their respective side plates 5 by 'means'of'

pins

16 and 63. The clean toweling is led over and around the innerbar 18'which is preferablynonrevoluble (although it might be revolubly mounted), then around the lower roller R which is mounted upon the shaft 14, then around'the'outer bar 19 which is also preferably non-'revolublv mounted (although it might be revolubly 'mounted), then through an opening in the front of the bottom of the cabinet, then through a second opening'in the rear of the cablnet a loop of sufficient length being exposed or use below the bottom of the cabinet), then above a shield S'pivotally mounted on a bar 62' connected to the end plates 5, and then around bar or roller 6 and the upper roller R'mounted on the'shaft 9, and then around a take-up roller 6 to form a roll T. Vheli the device is first set into operation, a few turns of the end of the towelin are passed around the roller 6 which slides and can turn'in vertical slots provided 'for this purpose in the side plates The weight of the take-up roller 6' is sufficient to cause it to be turned by the movement of the upper roller R so that the take-up mechanism is continuouslyoperatedwhen the front of the toweling is pulled downwardly. The rollers R and R are preferably provided with corrugated rubber facings so asto 'secure'a sufiicient grip upon the toweling' passed around it. J

In order to prevent more than a predetermined length of the toweling' from being pulled out of the cabinet b means of a single pull, the control mechanism shown in Figs. 2 and 3 is utilized. The lower shaft 14 is provided'with'a Star wheel 12 and this engages 'with'the pins'll on "a cogwheel 8 w c is moun e upon a s f t e upper rollers Rand R"to be simultaneously upper J roller "'R. This causes the rollersiR and R to be simultaneously actua-ted. Thefcarrier P isprovided with a pawl22 pivoted thereto'by means of pin 21 and the movement 0f the pawl22 is limited'by" the fixed pins 34 "and 3d connected to the carrier P. The outer end of'the pawl 22 normally rests upon" thelo wer" "in 34', as shown'in Figi' 2; The star"whee 12" is provided with astop 23 fixed thereto by rivets orthelike:

hen the outer portion of the exposed loop of the toweling is pulled downwardly, this causes the carrier P to be moved inwardly from the normal position shown in Fig. 2 (in which position it is kept by the force of gravity) into the position shown in Fig. 8,- so that the inner end of the pawl 22 will be projected in the path of movement of the stop 23. When the stop 23 contacts with the inner end of the pawl 22, it turns the said pawl around its pivot. pin 21 until the upper recessed portion of the pawl 22 engages with the upper pin 34, thus locking the parts against movement. IVhen, how ever, the pull on the front portion of the exposed loop of toweling is released, the force of gravity act-s to move the carriers P and 62 back into the position shown in Fig. 2. When the pawl 22 is moved awav from the position shown in Fig. 3, the inner end thereof is moved upwardly because the outer end of the said pawl 22 then drops upon thevlower supporting pin 84;, so that it is impossible for the stop 23 to again engage the inner nose of the pawl 22, until the lower roller R together with the connected star wheel 12 are moved for substantially another complete revolution.

As shown in Figs. 4 and 6, the inner arm of the support 62 is sufficiently long and heavy to cause it to normally assume the position shown in Fig. 4: in which the said inner arm rests upon a projecting end of the shaft 14. In this position the pawl 22 is moved into what may be called the inoperative position, shown in Fig. 2.

In order to prevent a reverse motion of the feed mechanism, a catch is pivotally mounted upon a pin connected to one of the side plates 5. A wire spring 52 has its inner end bent around the upper shaft 9 so that there is a frictional engagement between this loop portion of the spring 52 and the shaft 9. The spring 52 has a lateral portion 53 which may also be in close contact with the inner surface of the cogwheel 8 so as to provide additional frictional engagement. The spring 52 is then bent away from A fixed pin 51 connected to one of the end the cogwheel 8, as shown in Fig. 1, and it is then bent upwardly and a loop 54 is then formed which loosely engages the catch .50.

plates 5 limits the upper movement of the catch 50; WVhen the parts are actuated in the correct direction, then the star wheel 12 is actuated in thecounter-clockwise directionand the cogwheel 8 is actuated in the clockwise direction, if it is assumed that the observer is at the right-hand side of the parts illustrated in Fig. 1. The frictional engagement between the wire spring 52 and the shaft 9 (and also possibly with the inner face of the cogwheel 8) causes the upper end or loop 54 of the wire spring 52 to be raised so as to raise the catch 50 into the position substantially shown in Figs. 2 and 3, for example. The pin 51 limits the upper movement of the catch 50. It will be noted that when the wheel 8 is revolved that the spring 52 is not substantially distorted and that the lateral branch 53 is not wound up on the shaft 9. The spring 52 is only distorted or bent to an extent sufficient to overcome the weight of the catch 50. The angular portion of the spring between the loop thereof on the shaft 9, and the loop 54, is of an angular shape, and the outer branch of this is raised in a direction substantially perpendicular to the longitudinal axis of the catch 50.

In this position the parts can be freely actuated without the objectionable rattling noises which would be caused if the ordinary pawl and ratchet wheel mechanism were used. If, however, the back portion of the exposed loop is pulled downwardly, then the frictional engagement between the spring 52 and the shaft 9 (and possibly with the inner face of the cogwheel 8) causes the loop 54 to be moved downwardly, thus moving the catch 50 into the position shown in Fig. 5, so that it engages one of the pins 11 of the cogwheel 8; An eflicient and noiseless control is thus provided. I

The plates 5 may be connected adjacent their upper ends by the brace bar 60. The control mechanism thus described noiselessly checks'the feed of the towel save in the proper direction, prevents more than a predetermined amount of the toweling from being withdrawn from the cabinet at a single pull, and eiiiciently separates the clean portion of the toweling from the soiled portion thereof. IVhen the bar 18 ismoved to its inner position, it does not necessarily press the toweling against the surface of the lower rollerR. Experience has shown that this is unnecessary, because the arrangement of the bars18 and 19 produces such a large area of contact that the toweling does-not slip upon the lower roller R when said lower roller is locked against movement.

I/Ve have showna preferred embodiment of our invention, but it is clear that numerous changes and omissions could be made without departing from its spirit.

We claim:

1. In a feed and control mechanism for said catch and being adapted to move it the outer arm of the said angular-portion into the operative or into the inoperative being directly connected to the said catch.

position, dependent upon the direction of In testimony whereof we afiix our signa- 10 movement of the said wheel. tures.

2. A device according to claim 1 in which the said spring has an angular portion intermediate the said loop and the said catch,

JENS MORTENSEN. LEOPOLD TROPP.