US998866A

US998866A - Island

Info

Publication number: US998866A
Authority: US
Publication date: 1911-07-25
Anticipated expiration: 1928-07-25

Description

F. WATSON 11 W. MOULDING. 1 AUTOMATICALLY CONTROLLED SECURING 0R LOCKING DEVICE FOR SAFEGUABDING MACHINERY.

APPLICATION FILED IEB.24, 1908.

998,866. Patentd July 25,1911.

2 SHEETS-SHEET 1.

5%, Z mm arm/Mont COLUMBIA PLANOGRAPH 60., WASHINGTON. D 6.

F. WATSON & W1 MOULDING. AUTOMATICALLY CONTROLLED SECURING OR LOGKINGDEVIOE FOB. SAFEGUARDING MAGHINERY.

' APPLICATION FILED T11R24, 1908.

998,866, Patented July 25, 1911.

2 SHEETS-SHHBT 2.

COLUMBIA PLANOGRAPH c0. WASHINGTON. D. c.

UNITED STATES PATENT OFFICE.

FIELDEN WATSON AND WILLIAM MOULDING, OF CSWALDTWISTLE, ENGLAND, ASSIGN- ORS TO HOWARD & BULLOUGH AMERICAN MACHINE COMPANY, LIMITED, OF PAW- TUCKET, RHODE ISLAND.

AUTOMATICALLY-CONTROLLED SECURING 0B LOCKING DEVICE FOR SAFEGUARDING MACHINERY.

To all whom it may concern:

Be it known that we, FIELDEN Larson and WILLIAM MOULDING, subjects of Great Britain, residing at Cswaldtwistle, in the county of Lancaster, England, have invented, a new and useful Improvement in Automatically-Controlled Securing or Locking Devices for Safeguarding Machinery, of

which the following is a specification.

This invention, generally speaking, belongs to the art of locking devices, and it particularly pertains to a new and useful automatic locking device, especially designed for use upon closures of incasements of starting or change mechanism or machinery.

The invention contemplates for its prime object the provision of an automaticallycontrolled securing or locking device for use upon safeguarding machinery, at all times and under various conditions, in order that, when the machinery is rotated, changes or adjustments in the moving parts are prohibited, thereby preventing improper op eration of all inclosed moving parts.

A further object of the invention resides in improved means whereby the closure of the incasement or cover is locked or secured, and cannot be opened or removed while the machine is in motion.

The invention is applicable to any desired part of the machine, as herein set forth and shown in the drawings; that is to say, to any part or parts it will conveniently operate; but, in the present disclosure and showing, it is applied to the stripping cover of the revolving flat cards. I

The invention comprises a push bar having a hinged angular arm adapted to abut against a shouldered spring latch, which may be carried by any starting handle, rod, lever, cover guard or other mechanism; in this instance being shown as being carried by the locking bar.

Figure 1 is a side elevation of the machine, showing the invention applied thereto and cooperating with the fiat card. F lg. 2 is a plan view of Fig. 1. Fig. 3 is a side elevation of the mechanism for controlling the closure of the incasement. Fig. 4 is a front elevation of Fig. 3. Fig. 5 is a top plan view of Fig. 3, showing the permanent Specification of Letters Patent.

Application filed February 24, 1908.

Patented July 25, 1911.

Serial No. 417,356.

casing 12 in section. Fig. 6 is a perspective view of the stra fork mechanism, adapted to operate in oon unction with the invention. Fig. 7 is an enlarged elevation of a portion of Fig. 1. Fig. 8 is a perspective view of the structure shown in Fig. 3. Fig. 9 is a perspective View of the angular arm 4 and the spring projection 9. Fig. 10 is a perspective view of the push bar 1. Fi 11 is a perspective view of a portion 0 the carrying bracket 2. Fig. 12 is a perspective View of a section of the locking bar 6, showing the shouldered spring latch 5. Fig. 13 is a perspective view of the push bar 1, as

shown in Fig. 10, with the exception that the upper portion is more minutely illustrated.

In the drawings: 1 denotes a manually operated push bar, so mounted as to move in a suitable carrying bracket 2, which is suitably secured to the machine by bolts orv other means 2 as shown in Figs. 1 and 2. This push bar coperates with a suitable spring 3, in order that it will revert to what may be termed its outward position when not held manually to its inward position.

Hinged or fulcrumed at 4 and upon the push bar is the angular arm 4, and, when the push bar is manipulated, the said arm will contact or abut against the shouldered spring latch 5, suitably carried by the looking bar 6; that is to say, when the said angular arm is in the position shown in full lines in Fig. 3, and also in Figs. 4, 5 and 8. This arm is provided with a spring projection 9, shown in the drawings as a flat spring having its extremity curved, as indicated by the numeral 9 When the push bar 1 is manually operated, the spring rojection frictionally contacts, because 0 its disposition, with the revolving card cylinder 10. The revolving cylinder, in this instance,

is the moving member of the machine, and

theangular arm l, to move in 'order toco'ntact with the said shouldered spring latch 5.

The locking bar 6, at one'end, is'provided with a recess 14, Fig. 2, whichengages the lug 7 upon the hinged or pivoted stripping closure 8, which is pivoted at 13 to the frame of the machine, as shown ih Figs. 1 and 2. The end portion of the locking bar, that carries the shouldered spring latch, moves through anopenin-g 2 of the bracket Q and,

when the closure 8 is in the position shown in full lines, Fig. l, the shoulder 5 of the said latch engagesthe downwardly extend 1 ing portion 2 of the-sa1dbracket,so asto' securely holdfthe closure locked. The down wardly projecting portion 4 of the arm t o eratesthrough the opening 1 of the 'push bar; that is, when it is oscillated bythe 're volving card. The pushbar is'guided upon the bracket 2, by 'meanso'f the flanges 29 The push bar is hollowedout, as shown aft 1*, in which the spring 3 is located. v Said spring 3 isdisposed between one'end of said hollowed outportion andthe pinor belt "13} which is threaded into the bracketQ. This pin or bolt 1? is provided with an ei'ilarge ment 1 which covers the slot 1 "the pur-l pose of which slot is to allowthe push'ba'r to be operated.

Should the [push 'b'ar be operated, inanul u ally or otherwise, while the cylinder or ie H volving card 10 is'inmotiom'thespring .pro-" I jection '9 will contact 'withisaid cylinder or 1 "card 10, thereby tilting the angular arm the angular arm falls toits normal position.

and rendering it: impossible to release Ythe locking bar, by the disengagement of the "shoulder 5 of the spring latch 5 and the downwardly extending portion 2. When pressure upon the bar 1 is removed, thej spring 3 returns to its original'position, and

Accessmayonly be hadto the push bar,be-

cause it: is the only proper manually op- 'erative part of the device; that is to say, upon the exterior of the casing 12.

"When the machinery or cylinder or re-i vol'vingcard is at rest and pressure is applied tothe push bar, the spring projectidn will engage the card 10 (which is not revolving'at the time being) and will not, of course, tilt the angular arm.

In this resp'ect, the downwardly projecting portion? l will operate the sl'i-ouldered spring'lateh 5, order'to release the locking'bar 6, so that the closure 8 may be opened.

The strap fork 11' is designed to slide upon the carrying rod or bar 15, and the strap forlr is held in a horizontal position by'the' pin 16 bearing upon the edge of the fixed guide or member 17.

The lever 18 radiates from the'sleeve 18 which is fulcr'umed upon therod or bar] The saidlever 18 is automatically"operated when the closure 8 is opened by means of the rod 19, which is connected to the lever 18 and to the closure '8. Protruding from the lever-18, is an elongated lug 20, which, when the strap fork is over the loose pulley and the closure is opened, is brought into the path of one of the two lugsprojecting from opposite sides of the strapdork, thereby preventingthefork from being moved onto the faSt pulley so long as the closure is open.

It is obvious that when the closure is in the position shown in full lines in Fig. 1 it is securely locked by the bar 6, and cannot be liberated without applying pressure upon the bar 1. Pressure upon the bar 1 is only effective when the cylinder or card is stationary. "Not until the "elongated lug 20 is removed, fro'm'the 'pathof the strap fork is "it possible to 1'nove'the belt (not shown) in cooperation with the "fast pulley 21. The lug 20 is'automaticallyremoved by the closing of the closures. I

'Having thusTfully 'described the invention 'whatis claimed as new and'useful is 1. "In a locking'deviceforclosures of inc'asements, a locking bar to secure the closure against movement, aspring latch carried by saidbar, a pushbar, an angulararm carried by said push bar "for engagement with said latch, and means carried by said angular arm for engagement with a 'r'evolvmg part of the machine, whereby said an- "gular arm is incapable of operation "during motion of said revolving p art. I

.2. "In combination witha machine incase- 'inentfand closure a locking bar 'to secure s'aidclosure against movement, a push bar,

an angulararm pivotally carried by said push bar to-engage saidlocking "bar and ,-provided with'a Spring'prOjeCtion to engage 'a"revolving p'art'ofth'e machine to prevent ing bar, "and a spring projection having a craved portion carried by said arm adapted for engage-ment'with a movablepa'rt'ofthe machine to preventoperationof said angular arm. a

4L. Inc'onibination withtheclosure of a machine casing, a carrying rod having a leverfjournaled thereon,'a strap fork jour- -naled on the carrying rod, said lever having a connection with the "closure and being operated when the closure is opened, means on saidilever adapted to be brought into the path or said strap fork to prevent *Inove- -mentof the latter when-saidclosure is in its" open position, locking meansto-hold said closure againstmo'vement, and means to re- "lease said locking-means when arevolving part of the machlne 1s at rest, said lastnamed means having means to engage sale] revolving part when said revolving part is in motion, to prevent the locking means from being released.

5. In combination with the closure of a machine casing, a push bar having an angular arm movable thereon, a locking bar connected with said closure and designed to secure the same against movement, said angular arm being arranged for engagement with said locking bar to release the same to unlock said closure, and means borne by the angular arm and having a part thereof adapted to engage a revolving part of the machine, whereby said angular arm is rendered inoperative until said revolving part is in a state of quiescence.

6. In combination with a machine cover, a carrying rod, and a strap fork on said carrying rod, means carried by the carrying rod and adapted to be brought into the path of the strap fork to secure the latter against movement, means connecting the firstnamed means with the cover to operate said first-named means when said cover is opened, a push bar, a locking bar connected with said cover, and means pivoted to the push bar and arranged for engagement with the locking bar, to release the same, said pivoted means having a part thereof adapted to engage a revolving part of the machine, whereby the pivoted means is rendered incapable of releasing said locking bar until said revolving part is in a state of quiescence.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

FIELDEN -WATSON. WILLIAM MOULDING. Witnesses:

ARNOLD I'SHERVVOOD, JAMES DRAKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.