US2608736A

US2608736A - Snap hook

Info

Publication number: US2608736A
Application number: US222077A
Authority: US
Inventors: Edmond T Blazewicz
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-04-20
Filing date: 1951-04-20
Publication date: 1952-09-02
Anticipated expiration: 1969-09-02

Description

Sept. 2, 1952 E. T. BLAZEWICZ SNAP HOOK Filed April 20, 1951 Edmond 7. B/azem'cz INVENTOR.

BY M' EML Patented Sept. 2, 1952 UNITED ST TES PATENT em e- SNAP HOOK Edmond .T. Blazewicz, Chicago, Ill.

, Application April 20, 1951, Serial No. 222,077

" rel ase. ((124-233) This invention relates to new and,useful improvements in snap hooks enerally, and is directed to subject matter similar to myco-pending application, filed December 2, 1949, Serial No. 130,714, now Patent No. 2,560,550, issued July 17, 1951.

The primary object of this invention is to provide a snap hook in which the latching member or, tongue normally closing the same may be opened by pressing the same with a ring or the like to which a snap hook is to be secured, and which tongue may be positively urged to the open position to release the memberto which a snap hook is attached.

Another important object of this invention is to provide a snap hook of this character, which when open, the tongue thereof will not interfere with the free movement of a ring or the like into or out of the hook. V

Still another important object of the present invention is to provide a snap hook which is of simple and economical construction, and yet which will be durable and efficient for the purposes intended.

An important feature of the present invention resides in the provision 'of'tong'ue shields at the juncture of the body member at the ho'ok'for receiving the tongue when the latter is in the open position. I I f Another important feature of the present invention resides in the provisionof 'ca'm' means for positively opening the tongue, and which means are efficaciously actuated bythe sleev slidable on the body member.

A further feature of the present invention resides in the novel manner in which the sleeve return spring is mounted and connectsthe body member and the sleeve. 7

Other objects and features, of the presentinvention will become evident as the description thereof proceeds, .a preferred embodiment of which has been illustrated by way of example only in the accompanying drawings, wherein: Figure 1 is a side elevational view of the present invention; f 1, Figure 2 is a vertical sectional view of the present invention" taken substantiallyupon the I 1'"; wMeans is provided'to positivel-y 'open '2' I I I 1;: a Figure 5 is an enlarged sectional detail viewof the means provided for LugingslidingP-moVement of the sleeve on the body memberyand Figure'fi is an exploded side elevational view of the present invention. I 1 Reference is now made more specifically to the accompanying drawingmwherein like numerals designate similar parts throughout the various views, and in which the numeral I0 designates the snap hook generally. f i

The snap hook I0 comprises an elongated; hol low body member I2 having a hook I4 formed at one end thereof. A tongue I6 is positioned in the hollow body member I2 and is pivotedadjacent its inner end on a pivot pin I8 carried by the body member I2 so that the outer end 20 may be moved into and out of engagement with -the free end 22 of the hook I4, as clearly shown by the dotted and full line positions of the'tongu I6 shown in Figure 3. a I

In order to resiliently urge the-tongue I6 into the hook closing full line position shown in Figure 3,'the inner end of the tongue I6 and the in ner surface ofthe body member I2 are provided with opposed pro-tuberances 24 and 26, re's'pectively, and a coiled compression spring 28 is provided, the opposite ends of which are 'sea'tedabout the protuberances'24 and '26 to urge the same apart, thereby urging closing movement "of the tongue I6. Y i It is to be particularly noted that when the tongue i6 is moved into the dottedlin'e position line position shown in Figure 3 'thatbyvirtue of the fact that the outer end 20 of the same is received between the tongueshields 30-, the tongue I6 cannot interfere withthef-introductionor re moval from the snap hook of any object such as a ring or the like that the same may besecuredto.

As thus far described, it will be understood that an object such as a ring or the like may be en' gagedby the snap hook by, simplypressingsuch object against the free end 20' of the'tongue 'I B'to move the same into the dotted :line 1 position shown in Figure 3, and that upon further movement of such an object toward the end oithe hook I4 remote from the body member I2 the tongue I6 snaps to the full line os'iuonsnewn in Figure 3 under the action of the spring 28 to retain the same within the hook-IL r (6 which includes a sleeve 34 slidably positioned on the body member 12. A cross bar or pin 38 extends transversely through the sleeve 34, and the pin 36 slides in longitudinal slots 38 provided in the opposite sides of the body member l2 during longitudinal sliding movement of the sleeve 34 on the body member 12. As best shown in Figure 3, the pin 36 extends across the hollow interior of thebody member I! and is engageable with a cam surface 40 provided on the tongue l during sliding movement in the slots 38, it being evident from the drawings that upon movement of the sleeve 34 towards the hook l4 the tongue 7 IE will be moved from the full line to the dotted line position through the action of the pin 36 engaging the cam surface Ml.v

Means is provided to yieldingly urge the sleeve to a position permitting the tongue It to "close the hook l4, such means comprising the body member l2 .having a longitudinalgroove or: recess 4-2;:that: opens: at. the end of the. body member re;- mote from the hook; l4 anda protuberanced i; providedin the. recess 42 to constitute a spring seat for the upper end of a coilrcompressionspring 46 th t; extends. downwardly in the. recess 42.. As bestshownin Figure 5, the sleeve 34 is provided with; an inwardly extending finger 4.8 that: carries protuherance-BB that constitutesia spring seat for the lower end of thespring ltyand which is 1 iltflfial. aligmnent with the; protuberance 44, the arran ement being such. that the sleeve; 34 is mead downwardly with respect. to; the: body: memb21112; -It;wi1l:benoted that during upwardslide movement; of the sleeve 34; that'ithe finger lls and, the, protuberance 5fl':ride upwardlynin the IQQfiSS. 412.,

iAsswiyei, link-51 is secured to; theend: of the body: member 12: by means; of. a.pin:54,.the;swivel link 52 being provided with aishou-lderifi. to; limit downward: slidin movement; Qfi the; sleeve-:3 4'. A sm veks a1 securedito: theswivel linkdz by means afraniy ioiifl: he; rivet-being r tained; in p sition Links; by means of. the. pin Eknassine, therethrouehsas will. be; understood. I

'niegbody member-t2: and the-isleevefiiiiarepnefe $231113 rectan ular (it-square;inictosssectionafi shovmin Fi u e. d in.-this;. connection; it, :is it xbemoted that the; sidesof. the bodwmember parallel to the pivotal movement of thevtonguerlifi are. thick ned: nsid rably from the nd .of' the M lly/11 5 1 111 2- nearest; the; hook. it; to: a position adj aeent'gthepiyotpin t8 so: as tor-constitute: evidns; surfaces; fo the. ,pivotal mdvement of'ithe tongye; It.v Its-will ibexobisfirzvedithat; it issinto; the thickened; portions of thBwWEill-S, that the recess 4'2,-ei ;tends -s crasto constitute rwithgthe sleeve;

aisoclseir for thelun er. and iT hQ' spring.

J1me const-rnctiomand operation of; the-.invem tionihas; beenrset forthini considerable: detail :so that the p-rinciplesgthereoi may-be, readiiyiltilized by others, it:being understood: thatv SplrittOf the inv ntion-iissu i ct -to;-modifications that lie within: the; scope; of the appended; claims... -'It-.--wil1;,nowes-sesn1 that thereahas; been: some videda:snanihoolgwhichmay*bemonvenientlwseur data-a obj ct; and-iius rasreadilyreleased but-"simply liding: a; QEVEJ OWB JQr the; hook, the m te suriare; "of:- t e sleeve: bein serrated to .fa ilitatethis peratidni Having described the-invention; What'is claimed ,1. A snaphookcomprisingian elongated hollow body; member havingg'aa hook formed; at 10118: end th re n; ant lonea diitonaue havin its-inner e r c ed; nuthe .hodyimember anditsiouter.

normal neusasin andzioihsing the: hook,

means adjacent the inner end of the tongue body memberlhaving a longitudinal slot slidably receiving the pin, said tongue having a cam surface that is engaged by the pin to disengage the tongue and the hook upon movement of the sleeve in one direction, and means yieldingly urging movement of the sleeve in the opposite direction.

2. A snap hook comprising an elongated hollow body member having a hook formed at one end thereof, an elongated tongue received in the body member and pivoted adjacent its inner end thereto, the-outer end of the tongue being-movable to selectively open and close the hook, means yielding-1y urgingclosi-ng movementlofthe: tongue, means for-urging opening movement ot'th-etongue comprising a sleeve slidable longitudinally-on the body member and having a pinextending transversely therethrough, saidbodyhav ing a longitudinal slot slidably'receivingthe pin- 'sai'd tongue-having a cam surface that is engaged by the pin to open the hook upon sliding-move;- ment of the sleeve in one direction, and means yieldingly urging sliding movement of the sleeve in the other direction. j

3. A snap hook comprising an elongated hollow body member having a hook formed at one end thereof,,an-elongated tongue received inthebody member and pivoted adj acentits' innerend thereto, the outer end of the tongue being movable to selectively open and close the hookf' means yieldingly'urging closingmovementof the tongue, means for urgingopening movement of the tongue comprising: a sleeve:slidable 'lbngimdinally on the body memberand havinga ares; tending transversely therethroug'lg said body having *a longitudinal slot sli'dably'lceiving 'jthe pin, j said tongne'-'having 'a cam surface: that is engaged by the pin to open the hook upon slid ing movement of' the sleeve towards. thejii'ook. means yieldingly urging movement ofthefsieeve towards the otherend of thebodyimemberi'j 4;. A snap hook comprising anelongat'edhollow body, member having a hook formed atone end thereof; an elongated tongue received in thietbbdy member and ipivoted adj acent-its. innerendthere' to, the. outer end of the tongue being movable to selectively open and close the hookf'means yieldingly urging closing movement .oft'lie tongue, means for urging opening movement of gthe tongue comprising a. sleeve sl'idablev longitudi nally. onthe body, member and having a pin ex.- tending transversely; therethrough, said .body having, a.'long itudinal slot. slid'ably receivingthe pin said tongnei having. a. cam surface that is engaged by the pin to open the hook j'upon I'd, ing movement. oft-the sleeve towardsithef k, means yieldingly. urging moivement ofi the. towards thelother. endsoj. the body. membe' means'iat'ithe; other endloil thabody- 'memjb attachingQthasarhe. to, a. line and; also tor; limit;- ing movement.ofthe:,sleeve towards; other end of thekbody memberif is l 1} r p 1 5. .Asnap, hook comprising; ongated hollow body; member. having a. hookiformed at oneiend r ,a eeated on ue r ss y d ngthabv y to, the outer end of the tongue beinggmoyable tp selectively open and close. the hook, means yieldingly urging closing movement of the tongue, means for urging opening movement of the tongue comprising a sleeve slidable longitudinally on the body member and having a pin extending transversely therethrough, said body having a longitudinal slot slidably receiving the pin, said tongue having a cam surface that is engaged by the pin to open the hook upon sliding movement of the sleeve towards the hook, means yieldingly urging movement of the sleeve towards the other end of the body member, said last means comprising the body member having a recessed spring seat at said other end, said sleeve having an inwardly projecting spring engaging finger, and a compression spring seated between the spring seat and the finger.

6. A snap hook comprising an elongated hollow body member having a hook formed at one end thereof, said body member including spaced tongue shields adjacent the juncture of the hook and the body member, an elongated tongue received in the body member and pivoted adjacent its inner end thereto, the outer end of the tongue being movable from a sheltered hook-opening position between the tongue shields to engage the hook closing the same, means yieldingly urging closing movement of the tongue, means for urging opening movement of the tongue comprising a sleeve slidable longitudinally on-the body member and having a pin extending transversely therethrough, said body having a longitudinal slot slidably receiving the pin, said tongue having a cam surface that is engaged by the pin to open the hook upon sliding movement of the sleeve in one direction, and means yieldingly urging sliding movement of the sleeve in the other direction.

7. The combination of claim 6, wherein said first means includes a compression spring seated between the body member and the inner end of the tongue.

EDMOND T. BLAZEWICZ.

REFERENCES CITED The following references-are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 158,220 Reynolds Dec. 29, 1894 715,655 Getz et a1. Dec. 9, 1902 1,263,099 Olson Apr. 16, 1918 1,299,821 Carpmill et val. Apr. 8, 1919 FOREIGN PATENTS Number Country Date 237,821 Switzerland Aug. 16, 1945