Patent US3657915A successfully refreshed from Google Patents.
US3657915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic rear feeder for blind rivets
Assignee: JOSEPHSON SPEISER AND IVES
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Filing: 1971-05-21
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Granted: 1972-04-25
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Expires: 1991-05-21
Abstract
Abstract Blind rivets are automatically fed into a nosepiece of a blind rivet-setting tool by having the nosepiece split into sections which are pivoted so that the rivet can be carried by the pulling jaws and pushed through from the rear. The tool operates with two strokes. In the second stroke an auxiliary air cylinder pulls the jaws back and cams a sleeve to rotate it, to feed a fresh rivet into the space between the jaws and the nosepiece. The jaws pick up the rivet on the forward stroke and push it through the nosepiece sections, these sections closing behind the rivet flange. Vacuum is used to discharge the spent rivet mandrel and to draw the fresh rivet back against the nosepiece ready to be set.
Inventors
- 👤 William H Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:02
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/30; B21J15/32; B21J15/105; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53478; Y10T29/53487; Y10T29/53496; Y10T29/53709; Y10T29/53717; Y10T29/53726; Y10T29/5373; Y10T29/53739
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
132 words
Apparatus for setting blind rivets comprising, a nosepiece divided longitudinally into sections defining a mandrel-receiving orifice, means to separate said sections to permit the ferrule and flange of a blind rivet to be pushed through the space between said sections from the rear of said nosepiece, and means to move said sections together behind the flange of said rivet to reconstitute said nosepiece, means including jaws movable toward and away from said nosepiece along the axis of said orifice to grasp the mandrel of said rivet for setting said rivet, and means to supply a fresh rivet with its mandrel pointing to the rear to said jaws when said jaws are moved toward said nosepiece, so that the rivet will be pushed through the space between said nosepiece sections by said jaws.
Claim 2
Dependent Claim
132 words
Apparatus for setting blind rivets comprising, a nosepiece divided longitudinally into sections defining a mandrel-receiving orifice, means to separate said sections to permit the ferrule and flange of a blind rivet to be pushed through the space between said sections from the rear of said nosepiece, and means to move said sections together behind the flange of said rivet to reconstitute said nosepiece, means including jaws movable toward and away from said nosepiece along the axis of said orifice to grasp the mandrel of said rivet for setting said rivet, and means to supply a fresh rivet with its mandrel pointing to the rear to said jaws when said jaws are moved toward said nosepiece, so that the rivet will be pushed through the space between said nosepiece sections by said jaws.
Claim 3
Dependent Claim
54 words
Apparatus as recited in claim 1 in which said fresh rivet is supplied to said jaws by means to feed said fresh rivet from the side to a position between the retracted jaws and said nosepiece so that the rivet mandrel is inserted in said jaws as said jaws are moved toward said nosepiece.
Claim 4
Dependent Claim
38 words
Apparatus as recited in claim 2 in which said means to feed said rivet from the side is withdrawn from the path of said jaws after said jaws engage said mandrel, but before said jaws reach said nosepiece.
Claim 5
Dependent Claim
39 words
Apparatus as recited in claim 1 in which said jaws are formed to release said mandrel when said jaws engage the rear of the nosepiece, and vacuum means are provided for sucking the rivet mandrel rearwardly through said jaws.
Claim 6
Dependent Claim
56 words
Apparatus as recited in claim 4 in which a main cylinder is provided for reciprocating said jaws to set said rivet and an auxiliary cylinder is provided for reciprocating said jaws after said rivet has been set and released so that a fresh rivet can be supplied when said jaws are retracted by said auxiliary cylinder.
Claim 7
Dependent Claim
34 words
Apparatus as recited in claim 5 in which said main cylinder is connected to said jaws by means of slotted bars and said auxiliary cylinder moves said jaws in the slots of said bars.
Claim 8
Dependent Claim
26 words
Apparatus as recited in claim 4 in which telescoped tubes communicate with said jaws to carry the vacuum thereto regardless of the reciprocation of said jaws.
Claim 9
Dependent Claim
50 words
Apparatus as recited in claim 1 in which said nosepiece sections are each pivotally mounted and the inner rear portion of said sections are bored so that, when said sections are pivoted to separate the same, the flange of said rivet can be pushed through the space between said sections.
Claim 10
Dependent Claim
47 words
Apparatus as recited in claim 8 in which said nosepiece sections are formed with an outwardly extending flange which is engaged by a cap at the forward end of the apparatus, said cap being movable forward and back to act on said flange and pivot said sections.
Claim 11
Dependent Claim
40 words
Apparatus as recited in claim 9 in which said cap is threaded on said apparatus and is formed with spaced detents which can be engaged to rotate said cap on way or another to move said cap forward and back.
Claim 12
Dependent Claim
63 words
Apparatus as recited in claim 5 in which said auxiliary cylinder reciprocates an element with said jaws, said element bearing against a cam slot in a sleeve surrounding said jaws, whereby said sleeve is rOtated in time relation to the reciprocation of said auxiliary cylinder, and the rotation of said sleeve is employed to supply said fresh rivet and to pivot said nosepiece.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |