"type bar" collide ?

http://www.google.com/patents?q=%22type+bar%22+collide&scoring=2

http://www.google.com/patents?id=hEpzAAAAEBAJ&q=colliding#search
The metal, loop M9, attached to the key- holder M7, and wrapped around the fore end of the key-lever M, is a simple, cheap, and efficient fastening, which holds the key firmly without weakening the lever. The folded, looped, or U -shaped steel spring N under the key -lever M and on the rest N2, between the pivot B3 and the key M6, lifts and holds the lever to place after every depression and release, works promptly and without friction, is simple and cheap, and not liable to weaken by constant and prolonged use. The type-bar L, thin and wide at the pivot end, of tempered steel, and attached to the long journal-bearing hub L2, by putting the tenon of the hub through a hole through the type-bar, and setting one side of the type-bar against the shoulder of the hub made by the tenon, and swaging the outer end of the tenon against the other side of the type-bar, makes a light, efficient type-bar, which furnishes a bearing the whole length of the hub, and a hub as long as the space will allow, and which will spring to one side without harm when colliding with another, and spring back to place when released from: collision. The long, curved, loop-slotted guide L4, of tempered spring-steel, over the type-bar L, and under the adjustable hanger L3, and adjustable with the hanger, is an elastic, efficient guide, to insure the accurate vibration of the type'bar, and may be set so as to determine the force of the blow of the type L7 against the platen F.

"type bar" locking

http://www.google.com/patents?scoring=2&q=%22type+bar%22+locking&btnG=Search+Patents

http://www.google.com/patents?id=G-VVAAAAEBAJ&q=locking#search

avoiding any locking or jam-ming of the parts

http://www.google.com/patents?id=rOtqAAAAEBAJ&q=jam#search

At Fig. 16 the finger 50 is shown as having
slipped off of the pin 53. When this disengagement
occurs, the carriage and the platen-
carrier should move slightly toward the left
55 under the action of the spring-drum or driving
power to renew their proper relationship
to the feed-rack, but if after the automatic
release of the feed-rack and before the carriage
and platen-carrier make this slight re-
60 turn movement toward the left the line-space '
lever be not released the rack would be
forced toward the right and cause a .jamming
or pressure between the finger 50 and the end
of the pin 53, if such pin were made rigid in-
65 stead of yielding, as shown. . When the condition
of affairs just described occurs, the finger 50 will force the pin inwardly against the action of its spring 57 a distance equal to the rebound or.return movement of the platen- carrier, thereby avoiding any locking or jam- 70 ming of the parts, which would injuriously affect the machine or throw its parts out of proper working position.

the accidental jamming together of two type-bars

http://www.google.com/patents?id=ibJnAAAAEBAJ

One object of my present invention is to
provide, preferably in connection with the
keyboard of a writing-machine of the class
specified, a simple and effective safety-stop
25 device of suitable construction supported in
cooperative relation with two or more key-
levers of the machine, and adapted, upon the
working stroke of a key-lever, to be actuated
by said key-lever and thrown into positive en-
30 gagement with one or more adjacent key-
levers to thereby positively lock said adjacent
key-levers against effective movement
until the aforesaid actuated key-lever is returned
to its normal inoperative position.
35 Another object of my invention is to provide,
in connection with the key-levers of a
writing-machine of the class specified, a multiplex
safety-stop device comprehending a
multiplicity of pivotally-supported coopera-
40 tive key-lever lockers or tumblers arranged
in cooperative relation with the key-levers
and adapted, upon the working stroke of one
key-lever, f or engaging and positively locking
those key-levers adjacent to opposite sides of
45 the key-lever operated and for preventing
an effecting movement of said adjacent key-
levers until the operated key-lever has returned
to its normal ineffective position and
thereby preventing the accidental jamming
50 together of two type-bars, which would occur
if two or more key-levers actuating said type-
bars were simultaneously operated.

jamming

http://www.google.com/patents?pg=PA1&dq=jamming+%22type+bar%22&id=rOtqAAAAEBAJ&output=text#PPA9,M1

http://www.google.com/patents?id=rOtqAAAAEBAJ&pg=PA1&dq=jamming+%22type+bar%22&source=gbs_selected_pages&cad=0_1#PPA9,M1

http://www.google.com/patents?id=rOtqAAAAEBAJ
http://www.google.com/patents?id=rOtqAAAAEBAJ&q=jamming#search
http://www.google.com/patents?id=rOtqAAAAEBAJ&q=jam#search