Patent GB-190209543-A (GB)
Title: Improvements in Time Dating Stamps.
Inventor: RANSFORD ROBERT BOLTON
Filed: 1902-04-24
Granted: 1902-06-05
Abstract: 9543. Ransford, R. B., [Mechanical Improvements Co.]. April 24. Date and time printing stamps; hand-stamps.-A date and time stamp is shown in vertical section in Fig. 3, and in plan without the platen plunger in Fig. 2, and comprises year, month, and day wheels key-operated independently of the clock mechanism for the hour and minute wheels. A clock dial and frame 7, with a door 9, are secured to the casing plate 2, and a stud 10, Fig. 7, on the door is adapted to be locked by means of a spring-pressed pivoted arm 17 and a lock bolt 14. The bolt 14 has also a notch 18 to engage a hook 19 on the top plate 20, other hooks 21 at the other end of which engage lugs 22 on the back-plate 3. The clock mechanism is of usual form, 23 representing the main spring. The main shaft 29 is made in two parts, and provided with a barrel pinion secured to a toothed wheel 35 frictionally connected to the shaft. The minute-wheel 40 is secured on the shaft 29, and the hour-wheel 41 is fast on a sleeve 42. These wheels have rigid rims yieldingly connected to the hubs, preferably by radial springs 48, 50, and are disposed above an abutment or cushion 51. The sleeve 42 carries a toothed wheel 43 and ratchet-wheel 44. A snail cam 53, Fig. 4, on the shaft 29 operates a spring-returned lever 54 provided with a pawl 57 for driving the wheel 44, which is retained by a spring-pressed roller 59. The pawl is limited by an inclined face 61 on a stud 62, on which is pivoted a spring- retained detent 63 engaging the wheel 43 and released by the action of the lever 54 on its free end 65. A month-wheel 70 is secured on a shaft 67 by a set screw 69, and day and year wheels 71, 72, respectively, are connected to sleeves 73, 76. A ratchet-wheel 80 on the shaft 67 is operated by a spring-returned key 81 and pawl 88. A screw stop 91 limits the rise of the key and pawl, and at the same time the pawl is wedged in the engaged notch of the wheel 80, which is also provided with a spring detent 93. Ratchet-wheels 95, 104 and keys 100, 108 are similarly provided for the sleeves 73, 76, respectively. A hollow arm 112 is secured to the casing, and formed with a head 113, in which is arranged a plunger or slide 114 having a knob 115 and a horizontal platen 116 faced with soft rubber &c. The plunger contains a coiled returning-spring 119. The arm 112 contains a locking-bar 124, which slides through a web 125 and a slot 127 in the plunger, and is connected to a lever 128 in turn connected to a rod 132 co-operating with a weighted lever 134, Fig. 4, engaging a cam or finger 138 on the sleeve 42, the weight arm 137 resting against a stop pin 139. A coiled spring 140 on the rod 132 bears against the plate 39 and a cross-pin secured on the rod and bearing against an arm 142 of a rock shaft 143, another arm of which engages the stem of the key 100. When the key 100 is depressed, the rod 132 is latched by the lever 134 and the locking-bar 124 held withdrawn, and when the cam 138 comes into operation, the lever 134 releases the parts and locks the platen plunger until the key 100 is again depressed. The key 100 also operates a tell-tale or registering-mechanism 151, preferably an ordinary cyclometer, through the ratchet-wheel 95, spur gear 149, and a pinion 150. An inking-ribbon 152 is attached to spools fast on shafts provided with hand-wheels 157 and mounted in bearings on the plate 20 and retained by springs. A ribbon guide or plate 158 is hinged to the plate 20, and extends at the free end beyond an opening 159 in the plate 20, and is upheld by springs 160. Parallel wires on the plate 158 support the middle part of the ribbon. Paper is placed on the plate 158 and imprinted through an opening 163 registering with the opening 159.