US1874215A

US1874215A - Clutch mechanism

Info

Publication number: US1874215A
Application number: US452086A
Authority: US
Inventors: Edward L Ackerman; Alois J Zwierzina
Original assignee: ACKERMAN BLAESSER FEZZEY Inc
Current assignee: ACKERMAN BLAESSER FEZZEY Inc; ACKERMAN-BLAESSER-FEZZEY Inc
Priority date: 1930-05-13
Filing date: 1930-05-13
Publication date: 1932-08-30
Anticipated expiration: 1949-08-30

Description

Allg- 30, 1932- E. LQACKERMAN ETAL cfzLUTcH lmcmmrsu Filed lay 13.' 1930 2 Sheets-Sheet 1 ATTORNEY.

llg- 30, 1932.- E'. l.. ACKERMAN E'rAl. 1,874,215

CLUTCH MECHANISM Filed may 1s, 1930 2 sheets-sheet 2 /2 f l M" ATTORNEY.

Patented Aug.`3o, 1932 UNITDvl-STATES PATENT oki-FICE EDWARD L. ACKERMAN-AND ALOIS J. ZWIERZINA, OF DETROIT, MICHIGAN, ASSIGNOBS TO ACKERMAN-BLAESSER-FEZZEY, INC.,

OF MICHIGAN Application `ilerl May 13,V

ment to the window except upon operation of the regulator handle.

An object of the-invention is' to provide a clutch mechanism which will lock the window in any position in which it is desiredto be left.

Another object ofthe invention is to pro-'i vide a clutch mechanism in which there is no lost motion between the driven element and the window regulator element. p

A. further object of the invention is to provide a clutch mechanism consisting of a stationary cup, and a second cup secured to the other cup and in axial alignment therewith and a pair of helical springs arranged concentrically within the larger cup so that operation of the regulator handle in either direction will cause the larger diameter spring to contra-ct and the smaller diameter spring to expand, thus permitting the driving element to be rotated freely and further that, due to` the double'spring within the cup shaped member and the means of locking the driven member against rotation except by operation of the regulator handle, no lost motion of the driven member is possible as the driven member will be immediately locked when the regulater handle is no longer in operation.

A still further object of the inventionk is to provide a clutch mechanism which may be A enclosed in a single cup shaped member se cured to one face of a lock board or other ele'- ment and so constructed as to prevent movement from being 1mparted to the regulator arm when the regulator handle is not being operated. l l

These objects and the several novel features of the invention are hereinafter moreV fully described and claimed and the preferred form of construction by which these objects -are attained is shown in the accompanying drawings in which- Fig. 1 is an elevational view of an automobile door embodying our invention.V

Fig. 2 is an enlarged end view taken from the left handside of Fig. 3.

on DETROIT, MICHIGAN, A comomzvrrolv CLUTCH MECHANISM 1930. Serial No. 4152,086.

Fig. 3 is a section taken substantially on line 3 3 of Fig. 2.

, Fig. 4 is a perspective taken on line 4-4 of Fig.I 3. Y.

Fig. 5 is a series of perspective views of some of the elements comprising our clutch structure. c

Referring now to the drawings, the door lv has the pane of glass 2 slidably mounted in suitable guide channels positioned atA both sides of the opening 3. A lock board4 of standard construction extends between the side frames of the door 1 andbelow the openmg 3 and a regulator arm 5 is pivoted at one end as at G to the lock board and is provided with the toothed segment 7.

The opposite end of the regulator arm is provided with a roller 8 for engaging in a slot 9 provided on the lower` end of the glass pane 2 for raising and lowering the same when the regulator handle is operated7 all of such structure as described being well knownv in the art.

Referring now to Fig. 2, 3 and 4, it will be se .i that the cup shaped member 10 is provided with the outwardly extending flanged portion 11 having the punched out portions 12 therein for inserting the same in suitable apertures in the lock board 4. The outer edge ofthe punched out'portionsv 12 may then be bent over as indicated at 13 thus rigidly clamping the cup shaped member 10 to the lock board 4. The lock board may be further` provided with an aperture 14 of a diameter slightly greater than the reduced end portion 15 Vof the shaft 16 the same forming a bearing for one end of the said shaft. The cup'shaped member 10 is provided with the end wall portion 2O and the sameprovided with a bearing portion. 1? for supporting the opposite end of the shaft 16 to the reduced end portion 15. The end of the shaft 16 extending outwardly from the cup shaped member lG'is squaredI as indicated at 18 for re- Cevng the 11egulltor handle 19 thereon, the Y* (lil the end wall 2O of the cup shaped member 10 and is provid-ed with the cylindrical portion 22 extending toward the open end of the cup shaped member 10l and of a diameter slightly greater than the diameter of the shaft 16 and the end wall 23 thereof is provided with the aperture 24 of a diameter slightly greater than the hub portion 25 of the shaft 16. The shaft 16 between the portion 25 and the reduced end 15 is provided with the enlarged portion 26 the sides of the same being flattened as indicated at 27 for a purpose to be later described.

Loosely mounted upon'the reduced end portion 15 is a gear 28 having a hub 29 extending from one face thereof the contour of the hub portion being the same as the contour of the aperture 30 in the' driven member 31 so that when the pinion 23 and the driven member 31 are assembled they will form an integral unit. A pair of

arcuate lugs

32 and 33 are formed integral with the driven member 31 and ex tend toward the end wall 2O of the cup shaped member 10. The said lugs are provided respectively with the

notches

34 and 35 for receiving one end of each of the

helical springs

36 and 37. The outer diameter of the spring 36 is slightly more than the inner diameter of the cup shaped member 10 in its normal condition and the inturned end 33 engages in the notch in the lug 33 while the inturned end 39 engages in a space 40 formed between one end of the lug 32'and the adjacent end of the lug 41 formed integral with the driving member 42.

A similar lug 43 is positioned approximately dia-metrically opposite the lug 41 as will be clearly understood by reference'to Fig. 4. The inside diameter of the spring 37 is slightly less than the diameter ofthe cylindrical portion 22 of the member 21 and the out turned end 44 of the said spring engages in the notch 34 in the lug 32, while the end 45 engages in the space 46 formed between one end of the lug 32 and the adjacent end of the lug 43 of the driving member 42. By reference to Fig. 5 it will be seen that the aperture 47 formed in the driving member 42 is of the same shape as the enlarged portion 26 formed on the shaft 16 so that when the member 42 is assembled thereon rotation of the shaft 16 will cause the driving member 42 to be rotated. A pair of

lugs

50 and 51 are formed on the driving member 42, the lug 50 positioned between the lug 33 and the lug 41^ and the lug 51 positioned between the

lugs

43 and 33.

By reference to Fig. 4 it will be seen that the space between the lug 50 and the adjacent end of the lug 33 is somewhat greater than the space between the end 45 of the spring 37 and the adjacent end of the lug 43 and likewise the space betwen the lug 51 and adjacent end of the lug 33 is somewhat greater than the space between the inturned end 39 of the spring 36 and the adjacent end of the lug 41.

When the regulator handle 19 is operated to cause the shaft 16 to rotate in a direction as indicated by the arrow in Fig. 4 the driving member 42 being positively hired to the shaft 16 will be rotated at the same speed as the shaft and the lug 41 on the drive member will engage the inturned end 39 of the spring 36 and since the weight of the window will cause a drag upon the gear 28 and consequently upon the lugs 32 on the driven member 31 the spring 36 will be contracted ciently to allow the same to be freely rotated within the cup shaped member 10. [-fter the spring has been released from binding engagement with the casing the lug 51 on the driving member 42 will come to contact with the adjacent end of the lug 33 and thus cause the member 31 and the gear 23 attached thereto to be positively driven and since the segment 7 is in mesh with the said gear the regulator arm 5 will be caused to move upwardly closing the aperture 3 in the door 1. At the same time that the lug 51 comes into contact with the lug 33 and causes a rotation of the driven member 32 a reverse action will take place upon the spring 37. In other words7 the lug 32 engaging the outturned end 44 of the spring 37 will cause the same to eXpand thus permitting the spring to be rotated freely around the cylindrical portion 22 of the member 21.

When the shaft 16 is not being driven, the weight of the window is imposed on the gear 28 tending to turn the same and the attached member 31 in a direction of the arrow shown in Fig. 4 thereby causing the lug 33 to act through the end 33 of the spring 36 to expand the same against the wall of the cup member 10. This is the relationship and function of the parts in the mounting shown in Fig. 1. Oftentimes the mounting is reversed under which condition the weight of the sash would tend to turn the gear in the opposite direction and under this condition the weight of the sash is transmitted through the lug 32 and the end 44 of the spring 37 tending to contract the same against the cylindrical portion 22. Thus, in either character of installation, the weight of the sash causes the driven member 31 to be locked against material rotation.

When the shaft 16 is rotated in a direction opposite to that as shown by the arrow in Fig. 4 the lug 43 will first engage the outturned end 45 of the spring 37 thus expanding the said spring so that the Same may be freely turned around the cylindrical portion 22 of the member 21. The lug 50 will then come into contact with the lug 33 causing the driven member to be positively operated from the driving member and inasmuch as the space between the outturned end 45 of the spring 37 and adjacent end of the lug 32 is greater than the space between the lug 50 arranged within said cup and'in normal frictional engagement therewith, a drive shaft, a driven member connected to said springs, means actuated by the 4drive shaft when turned in either direction for causing the release of said lcoiled springs Jfrom locking engagement with said cup atthe timel of actuation of'said driven member.

10. In a clutch mechanism, a stationary element, a pair of coiled springs substantially concentrically arranged therewithin and in normal frictional engagement therewith, a driving shaft, a driven member Yconnected with both said springs, the arrangement providing that pressure applied to the driven element to turn the'same in either direction increases the rictional Vcontact of one or the other of the springs depending upon the direction of rotation, and means .between the driving shaft and driven element actuatable by rotation of the driving shaft in either direction to correspondingly drive the driven element, both said springs being released from locking engagement with the stationary element at the time the driven element is turned.

11. In a clutch mechanism, a stationary element, a pair of coiled springs positioned vtherein and in normal rictional engagement with separate portions thereof, adriving element, a driven element connected with both said springs and limitedly rotatable relative to the driving element, the arrangement providing that rotation of the driven element in etherldirection increases rictional contact of one or the other of the springs depending upon the directionfof rotation, and means between the driving and driven elements acv tuatable by rotation of the driving element in either direction to correspondingly drive the driven element, the said means on rotation by the driving element in either direction releasing one of the springs and the driven element releasing the other.

12. In a clutch mechanism, a pair of stationary cups, a coiled spring for" each cup adapted for rictional engagement therewith, a driven member connected to the coiled springs, a shaft extending centrally through the cups,.and a member actuated by rotation of the shaft to release both the coiled springs from the respective cups and finally engage Y the driven member.

In testimony whereof we sign this specification.

EDWARD L. ACKERMAN. ALOIS J. ZWIERZINA.