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Concept Search - What can I type?
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The mechanism of this article allows an operator to insert paper a predetermined distance into a typewriter by merely placing the paper against the rear feed rolls and then pulling the paper bail forward.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
65% of the total text.
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Power Operated Paper Insert Automatically Utilizing Triple Pitch For
The mechanism of this article allows an operator to insert paper a
predetermined distance into a typewriter by merely placing the paper against the
rear feed rolls and then pulling the paper bail forward.
Referring to Fig. 1, paper bail 4 pivots about pin 5, and rollers 3 are moved
away from platen 2 when handle 1 is pulled forward.
The lower side of paper bail 4 has two lugs 6 and 7. When paper bail 4 is
pivoted counterclockwise (as viewed), lug 6 contacts bellcrank 8 along edge 9,
causing bellcrank 8 to rotate clockwise (as viewed) about pin 10. Stud 11 on
bellcrank 8 pushes on edge of slot 17 in actuator 12, causing actuator 12 to
move in the direction of arrow 13.
Continued rotation of paper bail 4 brings lug 7 in contact with edge 14 of
actuator 12. Lug 7 then lifts actuator 12 while sliding along edge 14. Slot 17
allows actuator 12 to move upward while bellcrank 8 is pushing actuator 12 in the
direction of arrow 13. When actuator 12 has moved far enough, edge 15 will drop
over lug 7 by the force of spring 16.
Fig. 2 shows the position of lug 7 just prior to dropping off surface 14. Stud
11 is at the bottom of slot 17, and arm 18 on actuator 12 is poised above switch 19.
In the phantom showing of Fig. 1, edge 15 is a latch surface for actuator 12.
The platen 2 is rotated by the action of pawl 21 pushing on the teeth of platen