US3440845A - Latching device - Google Patents

Latching device Download PDF

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Publication number
US3440845A
US3440845A US574350A US3440845DA US3440845A US 3440845 A US3440845 A US 3440845A US 574350 A US574350 A US 574350A US 3440845D A US3440845D A US 3440845DA US 3440845 A US3440845 A US 3440845A
Authority
US
United States
Prior art keywords
knob
wheel
teeth
wheels
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US574350A
Other languages
English (en)
Inventor
Antonio Soler Marti
Juan Soler Marti
Jose Soler Marti
Mario Soler Marti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3440845A publication Critical patent/US3440845A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B37/00—Permutation or combination locks; Puzzle locks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7153—Combination
    • Y10T70/7181—Tumbler type
    • Y10T70/7198—Single tumbler set
    • Y10T70/7237—Rotary or swinging tumblers
    • Y10T70/726—Individually set
    • Y10T70/7271—Associated movable operator
    • Y10T70/7288—Spindle operator
    • Y10T70/7294—Concentric spindles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7153—Combination
    • Y10T70/7322—Permutation
    • Y10T70/7328—Compound tumblers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7153—Combination
    • Y10T70/735—Operating elements
    • Y10T70/7367—Tumbler structure and position
    • Y10T70/739—Motion-restraining means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/80—Parts, attachments, accessories and adjuncts
    • Y10T70/8297—For combination-operated mechanism
    • Y10T70/8378—Knobs, hand grips, etc.

Definitions

  • a safety latch for closures such as doors is operated by a simple divided spherical knob, the portions of which are independently operable. It employs no keys and its combination may be altered whenever the latch is in unlatched position. Further, access to the interior of the door may be had by the simple removal of the knob.
  • the field of safety locks is full of models with numerous keys and with various operating knobs, these prevent unauthorized persons from opening the doors. This complication, however, also atfects the owner of the lock, who must be equipped with the necessary key, which is easily lost, misplaced or stolen.
  • the latch which is the subject of the present patent application has all the advantages of the combination lock, has also the advantage of not needing any key, and of having the entire control of the latch concentrated in a single knob, divided into halves which may be operated independently, the appearance of which is simple.
  • knob may be easily removed, once the door has been opened and access had to the interior of the door, by simply loosening a nut.
  • a device which is easily operated with the door open permits the owner of the lock to establish in the latter the combination he desires to be able to open the door.
  • FIGURE 1A shows an exploded view of the latch.
  • FIGURE 1B is a perspective view of the bottom of the case.
  • FIGURES 2, 3 and 4 represent one of the three sets of meshing devices which form part of the latch.
  • FIGURE 5 is a section indicated by X in FIGURE 1A.
  • FIGURE 1 only one of these sets is shown in order to make the drawing clearer.
  • the latch, housing in a case 81, with a cover 82, is composed of the following devices:
  • a knob 1, of spherical form is joined to a shaft 2 terminating in a rectangular projecting piece 3 which engages in an aperture 4 of similar form in a circular cam 5 provided with an arm 6 ending in a projecting piece 7 of circular form.
  • the projecting piece 7 engages in a recess 8 cut in the opening 9 of the plate 10 which is joined to the bolt 11.
  • the plate 10 slides on the inner face of the case 81, and is guided in its movement by a screw 12 housed in the groove 13 of the case 81, and by the aperture 14, in the case 81 for the passage of the bolt 11.
  • the bolt 11 has on its inner part a rib 16 which penetrates into an opening when the mechanism of the combination permits the door to open, and which abuts against a stop-piece which impedes its movement when the combination is set to prevent the door opening.
  • the combination device of the latch is constituted by a knob 17 of spherical form equipped with a numbered disc 18 and a sleeve 19 with a lug on its inner face which engages in a longitudinal groove 21 in a hollow shaft 22 within which there turns freely the shaft 2 of the mechanism for operating the bolt.
  • FIG- URE 1 Mounted on the hollow shaft 22 there are three sets of parts, although only one of these sets is shown in FIG- URE 1 for the sake of clarity.
  • Each of the sets 23 consists of the parts shown in FIGURE 2B, and which comprise.
  • a toothed wheel 24 which turns freely and which engages with a stop wheel 25 and an auxiliary wheel 26 which limits the turning of the three wheels.
  • An operating lever 29 has a catch 30 which penetrates between the teeth of the wheel 24 urged by the action of a spring 31.
  • a second pivot catch 32 is urged by a spring 33 to maintain its projecting part between two teeth of the wheel 24, and a spring 64 secured between the auxiliary wheel 26 and the case rotates the wheel when it is not impeded.
  • Each one of the three sets 23 is fitted to the shaft 22 in a different parallel plane, and are contained within the case so that the three toothed wheels 24 and the three cams 27 have as their pivoted axis the hollow shaft 22; the three stop-wheels 25 mounted on the shaft 34, and the three auxiliary wheels 26 rotate on the shaft 35.
  • the three operating levers 29 pivot on the shaft 36, and the three springs 31 are fixed in the part 37 and their ends are supported in the piece 38.
  • the three catches 32 turn on the shaft 39 and their springs are anchored in the part 40.
  • an eccentric piece 41 with a central aperture with a lug 42 which engages in the groove 21 of the hollow shaft 22 and which consequently turns as result of the action of the knob 17 so that its teeth 43, 44 and 45 slide over the arch 46 of the lever fitted on the cover 82 of the case 81, causing the lever 47 fitted by screw 48 to the outer side of cover 82 to tilt when each of the teeth 43, 44 and 45 of the eccentric piece 41 passes over the tooth 49 on the lever 47.
  • the lever 47 has a transverse arm 50 which in predetermined positions can push, by means of the pivot piece 51, the three catches 32, disconnecting them from the wheels 24.
  • the three cams 27 have their circular profile cut by a chord 52 in such a manner that when one of the teeth of the eccentric piece 41 releases the tooth 49 of the lever 47 one of the cams has its chord 52 in contact with the corresponding operating lever 29.
  • FIGURE 3 there has been represented by a continuous line a cam 27 whose position corresponds to that shown in FIGURE 3A for the eccentric piece 41, that is to say when the tooth 43 has just passed over the tooth 49 of the lever 47.
  • a counter-clockwise turn of causes a second cam 27 (not shown) to have its chord, indicated in FIGURE 3B by a line of crosses 53, contacting its corresponding operating lever, at which moment the tooth 44 takes up the position which is occupied by the tooth 43 in FIG- URE 3A.
  • the third cam 27 will have its chord, indicated by a line 54 consisting of small circles, contacting its corresponding operating lever when the tooth occupies the position which is occupied by the tooth 43 in FIGURE 3A.
  • the shaft 34 When the bolt 11 is in its projecting position, the shaft 34 will be provisionally displaced to the position 34 by means of the displacement of its anchorage 57 with respect to the bottom of the case, as shown in FIGURE 1B by the arrow 58, until the lug 59 on the case enters the aperture in the spring tongue 61 on the anchorage 57.
  • the shaft 34 has two operative positions, (1) engagement or original position of the combination as shown in FIG. 3 and (2) disengagement as shown in FIG. 2.
  • the wheel 25 In order to move the shaft from position (1) to position (2) the wheel 25 is aligned with rib 16 as shown in FIG. 1A, and then the spring tongue 61 is raised to a position where it is released from lug 59 and then displaced manually to the position of aperture 60 (FIG. 1B).
  • FIG. 1B shows the disengaging position, in order to return to the original position aperture 71 of spring tongue 61 engages lug 59.
  • the knob is further rotated through 90 and the process described repeated, the to-and-fro movements imparted to the knob 18 around the new position III will displace the same number of teeth on the wheels 24, 26 of the third set 23 (FIGURE 1A).
  • the secret combination remains fixed in the latch when the shaft of the wheels 25 is immobilized in its original position, because of having caused the part 57 (FIGURE IE) to move until the lug 59 fixed on the case 81 enters the aperture 71 of the spring tongue 61.
  • Shaft 34 is joined with spring tongue 61 which is movable towards and away from the case, so when the spring strip is raised to release it from engagement with lug 59 and as it is moved towards aperture 71 the shaft 34 is thereby displaced.
  • each notch 68 from the position to receive the rib 16 through the angular distance corresponding to the number of teeth that the tooth 69 advanced.
  • the rib 16 canonly advance a small distance 72 and the bolt 11 does not allow the door to which the latch is fitted to open.
  • FIGURE there is seen the section indicated by XX in FIGURE 1A, and in it there are marked'by the the letters A, B and C the parts of each one of the three sets 23 mentioned. From this figure it may be seenthat the knobs 1 and 17 have diameter zones 73 and 74 with serrated surfaces to facilitate their handling.
  • a safety latch 0f the type having a bolt and mounted in a case comprising a knob rotatably mounted about an axis, the knob including a pair of mating hemi-spherical portions, each having a serrated circumferential band to facilitate turning, one of the portions of the knob connected to a disc provided with indicia for indicating angular positions, said one of said portions joined to a hollow cylindrical shaft provided with an exterior longitudinal groove for accommodating parts of the mechanism of the combination in which said hollow shaft rotates, another shaft joined to the other of said portions of the knob and terminating in a prismatic part having a screw'thread at the end thereof fixedly attached to one wall of the case, said prismatic part engaging a central aperture of 'a'circular disc with a radial lever, one end of the lever housed in a recess in a plate which is joined to a bolt, such that operation of the device causes movement of the bolt through an aperture in another wall in the case, a set of cams having apertures at their centers,
  • a safety latch according to claim 1, further comprising an operating lever in the plane of each of the other of said cams and pivotally mounted at one end thereof, a spring means engaging the operating lever for maintaining the lever member in engagement with the peripheral edge of each of said other of said cams, said one of said portions of the knob and the hollow shaft having positions in which successively each of said other of said cams has its rectilinear edge in contact with its respective operating lever, each of the operating levers having a catch at the other end thereof and a tooth wheel associated with each cam, each of the said catches engaging with its respective toothed wheel, each wheel being freely mounted on the hollow shaft and alternately spaced between each of said cams.
  • each toothed wheel meshes with the teeth of a rotatable disc, each rotatable disc including a concentric axially spaced pulley and a helical spring connected between the pulley and the case and biasing the pulley in one direction.
  • a safety latch as claimed in claim 4 further comprising a shaft common to a plurality of stop wheels, each stop wheel having a radial notch and mounted on a block which is slidably mounted in a groove in a wall of the case, the block having a portion which projects through said wall of the case, a spring tongue pressed between the block and the case and having two apertures only its length, a lug mounted on the case such that it is adapted to alternatively engage the apertures of the spring tongue corresponding to the positions of the block.

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Handcart (AREA)
  • Lock And Its Accessories (AREA)
US574350A 1966-05-11 1966-08-23 Latching device Expired - Lifetime US3440845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES32659366 1966-05-11

Publications (1)

Publication Number Publication Date
US3440845A true US3440845A (en) 1969-04-29

Family

ID=8442767

Family Applications (1)

Application Number Title Priority Date Filing Date
US574350A Expired - Lifetime US3440845A (en) 1966-05-11 1966-08-23 Latching device

Country Status (7)

Country Link
US (1) US3440845A (pt)
AT (1) AT291029B (pt)
BE (1) BE698261A (pt)
BR (1) BR6789273D0 (pt)
CH (1) CH454664A (pt)
GB (1) GB1123746A (pt)
NL (1) NL6706629A (pt)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US783351A (en) * 1904-04-22 1905-02-21 George W Abernethy Lock.
US1413393A (en) * 1921-05-09 1922-04-18 Bella Frank Di Permutation lock
US1416855A (en) * 1921-04-22 1922-05-23 Michalek John Lock
DE357726C (de) * 1921-05-29 1922-08-30 Theodor Kromer Fa Kombinationsschloss

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US783351A (en) * 1904-04-22 1905-02-21 George W Abernethy Lock.
US1416855A (en) * 1921-04-22 1922-05-23 Michalek John Lock
US1413393A (en) * 1921-05-09 1922-04-18 Bella Frank Di Permutation lock
DE357726C (de) * 1921-05-29 1922-08-30 Theodor Kromer Fa Kombinationsschloss

Also Published As

Publication number Publication date
DE1553471A1 (de) 1970-11-26
GB1123746A (en) 1968-08-14
NL6706629A (pt) 1967-11-13
AT291029B (de) 1971-06-25
BE698261A (pt) 1967-10-16
CH454664A (it) 1968-04-15
BR6789273D0 (pt) 1973-03-20

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