Patent GB-190207548-A (GB)
Title: Improvements in or relating to Adjusting and Locking Nuts, Bolts and the like.
Inventor: LOUMAN ANDREW
Filed: 1902-03-29
Granted: 1903-04-23
Abstract: 7548. Louman, A. March 29. Securing on axles.-The object is to lock the nuts and bolts of carriage axles &c. The locking is effected by the engagement of pins, angular projections, &c. with holes, slots, angular recesses, &c. These parts are regularly spaced apart or formed, and are so chosen as regards their number that a slight turn of the locking-means brings another pair of parts into register. Thus a locking-plate may have seven pins on its lower face to engage with seven holes in the upper face of the nut, and six pins on its upper face to engage with a cottar. The nut need then be turned only one forty-second part of a revolution to pass from one locking position to the next. Fig. 1 shows one form in which the nut A is locked by a plate c having seven pins d for seven holes in the nut and six projections e for a cottar f through the bolt b. By having two or more cottar holes a finer adjustment may be effected. In another form, a pin may be passed through one of a series of holes made right through the nut into one of a dissimilar number of holes in a washer suitably fixed. The nut may be locked to the plate c in the same way. A second locking-plate may be used above the plate c to increase the number of locking positions, or the locking-plate may be turned over for the same purpose. The plate c may be locked by having a square &c. bolt for the bolt b. It maybe locked to the nut in a similar way. Fig. 4 shows another form where a locking-ring c is used. This ring has, say, a hexagonal recess for the nut A and a heptagonal recess for the washer q. The ring is fixed by a staple which fits into holes h and into a groove r in the washer q, or in the nut A, and the staple is locked by a catch or turned-up lug. The washer q is kept from turning by a projection engaging with a recess in the work or by a suitably-shaped bolt hole. The washer may have recesses for pins on the ring which may further be held down by a pin through the nut or bolt head or by a cottar held by a screw. Fig. 3 shows another form, in which the plate c<2> has slots for pins p on the nut A<2> and is kept from turning by a square &c. hole fitting on to the square &c. part b<3> of the bolt or axle. The plate c<2> is locked by a second nut A<3>, which, again, is locked by the spring-controlled latch b engaging a notch m in the reduced and threaded part b<1> of the bolt &c. A single washer plate may be used for several adjacent bolts, this plate having the requisite spaced locking-holes &c, round each bolt hole. Fig. 9 shows a special cottar f and means for locking it to the bolt b. A spring plate n is riveted to the plate i. The plate nhas a recess, the sides of which engage the cottar near the notch g<2>. A single spring pin may be used for two adjacent holts, instead of having two separate cottars. Fig. 10 shows a means of locking the locking- ring c to the washer q. A plate c' has lugs v engaging lugs q<1> on the washer. The plate has to be turned to disengage these lugs. To prevent accidental disengagement, a lug v<1> on the plate snaps between lugs q<2> on the washer.