US1921380A - Timing device - Google Patents

Description

s29 of parts as are disclosed in the following speci- Patented Aug. 8, 1933 UNITED STATES "1.921.880 'mmvc pavrc'a William '1. Barker, Jr., West Hartford, Coma, -aaaianor to Hartford-Empire Company, Hartiord, Coma, a Corporation oi Delaware I Original application April 18, 1826, Serial No.

101,663. Divided and this application December 19, 1930. Serial No. 503,545

This invention relates to a timing and synchronizing device, particularly adapted for regulating the relative times of application and exhaust of pneumatic pressure to and from pneumatically operated mechanisms, which are to be operated in controlled synchronous relationship.

This application is a division of my copending United States application, Serial No. 101,663, filed April 13, 1926, now Patent No. 1,816,309, issued July 28, 1931. Reference is made thereto for a more detailed showing of one way in which my invention may be utilized.

A particular object of the invention is to provide a timing device of the class mentioned, which readily permits adjustment of the relative timing of the several fluid pressure operated devices and which is simple in construction and positive and efilcient in its operation.

Other objects of the invention include such novel features of construction and arrangement flcation and drawing, and as set forth in the appended claims.

In the drawing,

Figure 1 is a longitudinal view in section showing the details of construction of the timer mechanism; a

. Figs. 2 and 3 are views in section showing details of the timer structure, the sections being taken on lines 2-2 and 3-3 respectively of Fig. l.

The timing mesh 31 controlling the op erations of a plurality of mechanisms is of the rotary valve type and comprises a cylindrical casing member 42 provided with apertures adapted to connect with the several fluid conduits 36, 37, 40 and 41., as shown in Fig. 1. The rotary valve member includes separate rotor sections 43 and 44 which are secured to a common shaft 45 by any suitable means, as for example by clamping screws 48 and 47 respectively. The shaft 45 is rotated by the driving gear 32, which is connected directly preferably to a driving gear on a machine with which it is desired to time the mechanisms actuated by air passing through the pipes 36, 37, 40 and 41.

Referring to the details of construction shown in the drawing, the two rotor sections 43 and 44 are separate and form an annular inlet 49 whichreceives motive fluid from the source of supply through an opening 35, and distributes the same to a portion disposed in the circumference of the rotor sections. The rotor section 43 is provided with a port 50 which is shown as a hole terminating in a groove on the circumference of the rotor section and this port is shown in position to admit fluid to the conduit 38. While the port 50 is thus admitting fluid to the pipe 86, a similarly constructed port 48 in rotor section 43 is in exhaust position to relieve pressure in conduit 37. The relation of the ports 48 and 50 is shown in Fig. 2. Simultaneously with this operation, the ports in rotor section 44 for controlling the operation of other mechanism are being operated.

As shown,-port 51 is shown in position to admit fluid to conduit 40, and port 52 is in position to exhaust fluid from conduit 41. The relative postionsoi' these circumferential ports are shown The conduits as, 37, 4c and 41 may each lead to v to separate fluid pressure actuated mechanisms, such for example as trip-oil. valves or air motors. When so connected, it will be obvious that the mechanisms controlled by air admitted to the conduits 36 and 37 will always be moved in a predetermined time relationship to each other, and similarly that the mechanisms actuated by the passage of air through the pipes 40 and 41 will always act in timed relationship to each other.

It will also be obvious that by varying the position ofthe rotor members 43 and 44 on the shaft 45, the time of actuation of each pair of mechanisms controlled by the separate rotors 43 and 44 may be varied relative to the m driving the gear 32 and to each other. A plurality of mem- 35) bers 43 and 44 may be provided with circumferential grooves 48, 50, 51 and 52 of varying lengths, and it will be obvious that these'may be readily substituted on the shaft 45 for one another.

The pipes 36 and 37 may be connected to op- W3 posite ends of a single air cylinder, and the pipes 40 and 41 similarly connected to a second air cylinder. Thus each rotor section will control one mechanism, the movement oi which may be varied relative to the other and to the mechanism driv- L A synchronizing device comprising a continuously rotating shaft, a two-way valve adJustably mounted on the shaft for controlling the admission and exhaust of fluid to and from a fluid motor, another two-way valve adjustably mounted on the shaft for controlling the admission and exhaust of fluid to and from a second fluid motor, and means for adjusting the valves to time the movements of said motors relative to each other,

2. A device for synchronizing the timing of an apparatus to the timing of two fluid pressure movement 01' said apparatus with the movements of said motors.

3. Atimer mechanism comprising a casing having two series of circumierentially spaced ports, a rotary shaft located in and concentric with said casing, and a pair of valves secured to said shaft within said casing and each adapted during a complete rotation of said shaft to connect each .port of a series with a source oi pressure fluid supply and with the atmosphere at different times, at least one of said valves being independently adjustable angularly about the axis of the shaft. 1

WILLIAM T. BARKER, JR.

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