US1704541A

US1704541A - Bolt-head trimmer

Info

Publication number: US1704541A
Application number: US521815A
Authority: US
Inventors: James A Kinney
Original assignee: Bethlehem Steel Corp
Current assignee: Bethlehem Steel Corp
Priority date: 1921-12-12
Filing date: 1921-12-12
Publication date: 1929-03-05
Anticipated expiration: 1946-03-05

Description

March 5, 1929. A, KIN Y 1,704,541

BOLT HEAD TRIMMER Filed Dec. ,12. 1921 end to receive the shankof a bolt and to receive a bolt ejecting spindle, said plunger being adapted to carry the bolt into head trimming engagement with the die, a spindle .movab'le intosaid apertureto eject a bolt ,shank therefrom, and means supported on relative to the die having an aperture in its the shank end of a bolt blank and to Carr end toreceive the shank of a bolt and to receive a bolt e ecting spindle, a splndle movable into said aperture to reject a bolt shank therefrom, and a spring supported on said plunger and adapted to be compressed during the forward movement of the plunger in a trimming operation by the entrance of the shank of the bolt into the aperture in the plunger, and to expand at the completion of the trimming operation and to e ect the shankot the bolt from the aperture in the plunger;

3. In a bolt head trimmer, in combination, a head trimming die, a plunger movable relative to the die having an aperture in its end to receive the shank eta bolt and to receive a bolt ejecting spindle, a chamber in rear of said" aperture, said spindle. being movable into said aperture to eject a bolt shank therefrom, a spring'in said chamber and normally holding said spindle at its forward limit of travel, the spring being adapted to be compressed by theentranee or the shank of a bolt into the. aperture Qfthe plunger, during forward movement of the plunger, and to expand at the completion of the trimming operation and to eject the shank of the bolt from the aperture in the plunger.

4. Ina

belt lijead tri 'uner, in combination,

a head trimming die, a, hollow plunger movablenrelative to the die adapted; to'receive the blank. into head trimming engagein withthe die, an. ejector contained in s plunger, and means engaging said eject-or adapted 'to be energized by the working stroke of said plunger-and zultomatieally rendered active immediately after the trim ming operationto cause said ejector to move axially whereby the bolt blank 1s e ected r Q- spindle movable nto said aperture a bolt shank therefrom, means for elleoting' from the plungerat the endof its Working stroke.

5. In a bolt head trimmer, in combination,

ardie, a plunger adapted to receive the shank end of a bolt blank andpress same through the die during its working stroke, and means energized by the plunger during its Working stroke andrendered active immediately upon completion of such stroke to eject the bolt blank from the plunger.

6. In a bolt head trimmer, in combination, a die, a plunger adapted to receive the shank end of a bolt blank and press same through the die during its Working stroke, and means energized by the plunger during. its Working stroke and rendered active to eject the bolt blank from the plunger upon completion of the trimming operation independent of the movement 01 said plunger.

1. ill a bolt head trimmer,'in combination,

a die, a plunger adapted to receivethe shank end or a bolt blank, means elfecting relative movement between'the plunger and the die toward and from'each other, resilient means carried by the plunger adapted to be engaged by the shank end of a boltblank to store energy during the earlier part of the" relative approaching n'iovement ot' the plunger and the die, means whereby the plunger engages a portion of the head of the bolt blank during'the' latter ;part of said approachingmovement of the plunger and die whereby the bolt blankis'held in workengagement withthe die until the'co mpletion of the trimming operation, where upon said resilient means acts to expend the,

stored energy to eject the bolt from the plunger. I 1

8. In a bolt head trimmer, in combination, a head trimming die, aplunger having an aperture in its end to receive the bolt, and to receivea bolt ejecti' to eject relative movement betiveenrthe plunger and the die, and means supported on the plunger and adapted to store energy therein during en iproaching relative movementbetween the plunger and the die in a trimming operation and to expend such energy when the movement of the blank through the die is completed, to move thespindle forwardly and to eject the boil 'lroin'the aperture inthe plunger.v j

In t stimony whereoi' I hereunto affix my} signature. I Y e JAMES a i'uunr. it