US1794206A

US1794206A - Latch

Info

Publication number: US1794206A
Authority: US
Inventors: Gordon E Roedding
Original assignee: GRAND RAPIDS BRASS CO
Current assignee: GRAND RAPIDS BRASS Co
Priority date: 1929-12-13
Filing date: 1929-12-13
Publication date: 1931-02-24
Anticipated expiration: 1948-02-24

Description

Feb. 24, 1.931. (5, E ROEDDING 1,794,206

LATCH Filed Dec. l5, 1929 2 Sheets-Sheet l x mln nl.

INVENTOR 50M/0x2 iwf/dira ORNE YS.

Feb. 24, 1931. Q E, RQEDDING L'QLZ LATCH Filed Dec. 13, 1929 2 Sheets- Sheet 2 Blf/@ W gam@ A TTORNEY Patented F el). 24, 1931 UNTE STATES PATENT oFFlcF.

GORDON E. RGEDDING, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO GRAND' RAPIDS BRASS COMPANY, OF GRAND RAPIDS, MICHIGAN j f LATCH Application.filed December 13, 1929. SerialNo. 413,732. K

The main obj ect of this invention is to provide a reversible latch readily adjusted for either a right or left hand latch Vand having a long throw in either adjustment.

A further object is to provide a reversible latch having these ladvantages in which the parts are few, economical to produce and easily assembled.

Objects pertaining to details and economies of my invention will definitely appear from the description to follow. The invention is defined in the claims. Y

A structure embodying the features of my invention is clearly illustrated in the accompanying` drawing, in which:

ig. 1 is a fragmentary view of a door and its casing with one of my improved latches mounted thereon, the latch casing being shown in section on line 1 1 of Fig. 2.

Fig. 2 is a fragmentary view with the latch in section on a line corresponding to line 2 2 of F ig. 3, the spring supporting link being adjusted to a central position relative to the bolt vfor convenience in illustration. The latch is inoperative when in this position. Y

Fig. 3 is an inverted fragmentary view of the latch proper with the parts in position shown in Fig. 2.

Fig. et is a fragmentary rear or inverted View with the bolt shown in actuated position by full lines and in retracted position by.

dotted lines. j

Fig. 5 is a rear perspective view of the back plate of the latch.

In the accompanying drawing 1 represents a door casing and 2 the door. The body 3 of the latch is preferably a stamping. This latch body is provided with a back plate 4 having special features which will be re-V ferred to as the description proceeds.

The rear wall 5 of the housing has an opening therein to receive the bolt 6. The front Wall 7 has an opening through which the bolt projects. In forming the rear opening a portion 8 is struck inwardly as shown in Fig. 2, this inturned portion having a pivot 9 formed thereon engaging a pivot opening in the top of the bolt.

The bolt is chambered and has a longitudinal the letters L and R on Figs. .3 andf, in`

dicating right and left. These pivot seats are disposed on opposite sides of and uniformly spaced from thevbolt pivot 9.

A bridge piece-17 is struck up' from the rear portion ofthe back plate overlapping the pivoted end of the link, thereby retaining its pivot in Vengagement with the pivot seats. This bridge piece also has an upwardly proj ecting lug 18 disposed in alinement with the pivot and constit'utingfa pivot member for the bolt, the lug engaging within the'chamber of the bolt.

A coiled spring 19 is engaged with a spherically curved seat 2O provided therefor on the arm 12, its other end being supported by a lug 21 struck inwardly from one of the side walls of the bolt, see Fig. 2. With the parts thus arranged the spring acts to urge the Vbolt'to latching position, the spring being placed under additional stress as the bolt is swung from this latching position or retracted.

To hold the bolt in retracted position against the tension of the spring, the bolt is provided with downwardly projecting detents 22 which are adapted to engage with the slot-like keepers 23 disposed at each Side of the central position of the bolt. The thrust of the spring tends to swing the boltv rearwardly so that it is automatically engaged with these keepers when swung to retracted position or to position bringing the detents 22 in alinement with the openings 23.

lith this arrangement o t parts the latch has a long stroke or throw, that is, the bolt is free to swing a considerable distance beyond the center oi the latch, so that it is very effective insealing doors such as for refrigerators, or in taking up or compensating for wear and compression on the gaskets or' refrigerator doors and the like.

' In most latches othis type the normal or stop position of the bolt under the action of its spring is a central position, thereby limiting the effective compressing action to the latch center position, whereas in the latch of this application this throw' and consequent take-up are very substantially increased, and this without increasing the size of the latch.

Stops 24 are struck inwardly from the front wall Iof the housing in position to be engaged by the lug lli on the arm of the `spring supporting link. Only one ofthese stops is in operative position at one time as the lug clears the other. These stops can be positioned without increasing the size oi the latch to permit a greater throw than is possible with the latchillustrated. The advantage'oi this is,` as stated, much greater than that ot the ordinary reversible latch.

n The keeper .Q5-is provided with a' tappet 2G adapted to disen gage the bolt detent from its keeper when the door is swung to closed position with the latch retracted, thereby allowing the spring to act to engage the latch.

I have illustrated and described my improvements in an embodiment especially designed for refrigerator doors or other relatively heavy doors. describe other embodiments or adaptations as it is believed that this disclosure will enable those skilled in the art to embody or adapt thev samelas maybe desired..`

Having thus described my invention what I claim as new and desire to secure by Letters Patent is.:

l. In a latch, the combination with a housing provided with a back plate, a chambered bolt pivotally mounted in said housing and' having Va slot in its top wall and a rearwardlyprojecting detent, said housing back plate having notch-like pivot seats on its rear edge disposed on opposite sides of the bolt pivot and also having keeper openings disposed on opposite sides ot' the plane of the pivot to coact with said detent, a spring supporting link having a pivot selectively enga geable with said seats in said back plate, the swinging end of said link having an upwardly projecting arm Vat its front end disposed through said slot in said bolt and having a lug overlapping the top of the bolt, said bolt having a spring supporting lug in spaced relation to said arm, said back plate also having a bridge piece struck up at the rear edge thereo overhanging the rear end of said spring l have not attempted t0' supporting link and provided with an upwardly projecting bolt engaging lug alined with the bolt pivot, and a coiled spring arranged in said bolt in supporting engagement with its said spring supporting lug and said arm on said spring supporting link.

2. ln a latch, the combination with a housing provided with a back plate, a chambered bolt pivotally mounted in said housing and having a slot in its top wall and a rearwardly projecting detent, said housing back plate having pivot seats disposed on opposite sides et the bolt pivot and also having keeper opendisposed on opposite sides of the plane orthe pivot to coact with'said detent, a spring supporting link having a pivot selectively engageable with said seats in said back plate, the swinging end of said link having an upwardly projecting arn'rat its front end disposed through said slot in said bolt and having a lug overlapping the top ofthe bolt, said holt l iving spring supporting lug in spaced relation to said arm, and a coiled spring arranged in said bolt in supporting engagement with its lsaid spring supporting lug and said arm on said spring supporting link.

l. in a i ch, theconibination with a housing provided with a back plate, a chambered boit pivotally n'lo'unted in 'said housing and having a ulotin its top wall and LLI-rearwardlj 'L oie "ng detent, said'housing back plate having notch-like pivot seats on its rear edge dispos' l on opposite sides of the'bolt pivot l also having keeper openings disposed on enact with said' detent, spring supporting link having a pivot selectively eiigageable with said seats in said back plate, the swinging end oi said link having an upwardly projecting arm at its front end disposed through said slot in said bolt and having a lug overlapping the top of the bolt, said arm having a e spherieally curved spring seat thereon, said bolt having a'spring supporting'lug in spaced relation to said arm, a coiled spring arranged in said bolt insupporting engagement th its said spring supporting lug" and said arm on said spring supporting link, and spaced stops on said casing enacting with said lug on said link. Y

el. in a latch, the combination with a housing provided with a back plate, a' chamered bolt pivotally mounted in said housing and having a slot in its top wall and a rearwardly projecting detent, said housing back plate having notch-like pivot seats on its rear edge disposed on'opposite sides of the bolt pivot and also having keeper' openings disposed on opposite sides ot the plane of the pivot to vcoactwith said detent, a spring supporting link having a pivot selectively engageable with said seats in said back: plate, the swinging end of said link having anup- .vardly projecting arm fat its front end dis- .site sidesof the plane of the pivot to Y lee lIllu ist ifi)

, spring arranged in said bolt in posed through said slot in said bolt and having a lug overlapping the top ot' the bolt, said arm having a spherically curved spring seat thereon, said bolt having spring supporting lug in spaced relation to said arm, anda coiled spring arranged in said bolt in supporting engagement with its said spring su sporting lug and said arm onsaid spring supporting link. Y

5. ln a laten, the combination with a housing provided with a back plate, a chainbered bolt pivotally mounted in said housing and having a slot in its top wall, said housing back plate having pivot seats disposed on opposite sides of the bolt pivot, a spring supporting link having a pivot selectively engageable with said seats in said back plate, the swinging end of said link having an upwardly projecting arm at its trout end disposed through said slot in said bolt and having a lug overlapping the top of the bolt, said arm having a spherically curved spring seat thereon, said bolt having a spring supporting lug in spaced relation to said arm, a coiled supporting engagement with its said spring supporting lug and said arm on said spring supporting link and s iaced stois on said casino` coactine' 7 .l b with said lug on said link.

6. In a latch,the combination with a housing provided with a back plate, a chambered boltl pivotally mounted in said housing and having a slot in its top wall, said housing back plate having pivot seats disposed on opposite sides ot the bolt pivot, a spring supporting link having a pivot selectively engageable with said seats in said back plate, the swinging end of said link having an upwardly projecting arm at its :tr-ont end disposed through said slot in said bolt and l aving a lug overlapping the top ot the bolt, said arm having a spherically curved spring seat thereon, said bolt having a spring supporting lug in spaced relation to said arm, and a coiled spring airanged in said bolt in supporting engagement with its said spring supporting lug and said arm' on said spring supporting link.

'1'. In a latch, the combination with a housing provided with aback plate, a bolt pivotally mounted in said housing, said housing back plate having notch-like pivot seats on its rearV edge disposed on opposite sides ot the bolt pivot, a spring supporting link having a pivot selectivelyT engageable with said seats in said back plate, the swinging end ot said link being slidably associated with said bolt, a spring mounted on said bolt in supporting engagement with said link, said back plate also having a bridge piece struck up at the rear edge thereof overhanging the rear end ot` said spring supporting link and provided with an upwardly projecting bolt engaging lugs alined with the bolt pivot.

8. In a latch, the combination with a housing provided with a back plate, a bolt pivotally mounted in said housing, said housing back plate having notch-like pivot seats on its rear edge disposed on opposite sides of the bolt pivot, a spring supporting link having a vpivot selectively engageable with said seats in said back'plate, the swinging end of said link being slidably associated with said bolt, and a spring mounted on said bolt in supporting engagement with said link, said back plate also having a bridge piece struck up at the rear edge thereof oyerhanging the rear end of said spring supporting link.

9. ln a latch, the combination with a housing provided with a back plate, a. bolt pivotally mounted in said housing, said housing back plate having notch-like pivot seats on its rear edo'e dis osed on o osite sides of the bolt pivot, a spring supporting link having a pivot selectively engageable with said seats in said back plate, the swinging end of said link being slidably associated with said bolt, and a spring mounted on said bolt in supporting engagement with said link.

l0. ln a latch, the ycombination, with a housing, a chambered bolt pivotally mounted within said housing and having a slot in its top wall, a spring supporting` link having an upwardly project-ing arm on its swinging end disposed through said slot in said .bolt and having a lug overlapping the top of the bolt., said housing being provided with link supporting means disposed at opposite sides of the bolt pivot and with which the link may be selectively engaged, a spring mounted within said bolt to engage said arm on said link, and spaced stops in said casing limiting the swing of said bolt in latch engaging di- Y housing, a chambered bolt pivotally mount-l ed within said housing and having a slot in its top wall, a spring supporting link having an upwardly pro]ecting arm on its swinging end disposed through said slot in said bolt and having a lug overlappingthe top of the bolt, said housing being provided with link support ng means disposed at opposite sides ot the bolt pivot and with which the link may be selectively engaged, and a spring mounted within said bolt to engage said arm on said link.

12. ln a latch, the` combination with a housing, oi a chambered bolt pivotally mounted in said housing, a spring support adapted to be Vsell-actively mounted within said housing at either side ot' the bolt pivot, the swinging end ol said support being slidably 'engaged with said bolt, a spring mounted on said bolt to engage the swinging end of said support, coacting detents and keepers on said housing and bolt adapted to support the bolt in retracted position when swung in either direction from a central pol sition, and spaced-stopsv on said housing coacting with the swinging end of said support. 13. In a latch, the combination with a housing, of a bolt pivotally mounted in said housing, a spring support adapted to be selectively mounted within said housing at either yside oie the bolt pivot, the swinging end of said support being slidably engaged with said bolt, a spring mountedon said vbolt to engage the swing end of said support, and coacting detente and keepers on said housing and bolt adapted to support the bolt in retracted position when swung in either direction from a central position.

le. ln a latch, the combination with a housing ot a bolt pivotally mounted in said housing, a spring support adapted to be selectively mounted within said housing at either side oi the bolt pivot,l the swinging end of said support being slidably engaged with lsaid bolt, a spring mounted on said bolt to engage the swinging end of said support, and spaced stopsl on said housing coacting with the swinging end of said support. Y y

15. ln a latch, the combination with a housing, oi a chambered bolt pivotally mounted in said housing, spring support pivotally mounted within said housing at one side of.

the-bolt pivot, the swinging end of said support being slidably engaged with said bolt,

a spring supported within said bolt to engage the swinging end ot said support, ceacting delents keepers on said housing and bolt adapted to support the bolt in retracted position, and a stop on said housing coacting with the swinging end ot said support.

16. ln a latch, the combination with a housing, oi a bolt pivotally mounted in said housing, a spring supporting link slidably engaged at one end with the bolt and adapted to be selectively pivoted at either side of the bolt pivot, and a spring mounted on the bolt to act on the swinging end of said link.

17. ln a latch, the combination with a housing, of a bolt pivotally mounted in said housing, a spring supporting link slidably engaged at one end with the bolt and adapted to be selectively pivoted at either side o1" the bolt pivot, and a spring acting on the swinging end or" said link.

18. ln a latch, the combination oit a housing, a bolt pivotally mounted in said housing, said housing having an opening in its front wall permitting a tree swinging of the bolt in either direction from a central position, a spring support having sliding engagement with the bolt and adapted to be selectively pivoted at either side or" the bolt pivot, and a spring acting on the swinging end of the support.

19. ln a latch, the combination with a housing,o a bolt pivotally mounted in said housing, a link pivotally mounted in said housing in spaced relation to the bolt'pivot, the swinging end of said link being slidably engaged with the bolt, and a sprin arranged Within aild bolt to engage the swinging end ot said 20. ln a latch, the combination with a housing, of a bolt pivotally mounted in said housing, a link pivotally mounted in vsaid housing in spaced relation to the bolt pivot, the swinging end of said link being slidably engaged with thek bolt, and a spring acting on the swinging end of said link.

ln witness whereof I have hereunto -set my hand.

GORDON E. ROEDDING.