A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 5361027 | Apparatus for non-contact dynamic inspections of a plurality of pieces An apparatus for checking the surface condition of rollers for bearings, in particular barrel rollers, in which the pieces are conveyed and lined up in a row towards a checking station. In order to ensure the correct positioning of each piece during the c... | 11/01/1994 |
| 5299360 | Probe for checking linear dimensions A probe comprises a support casing, a movable arm-set with an arm carrying a feeler and a detection device providing a signal further to contact occurring between the feeler and the workpiece. In order to enable the feeler to perform translation displacem... | 04/05/1994 |
| 5259121 | Apparatus for a multiple checking of internal dimensions An apparatus for the automatic and simultaneous checking of holes comprises plug gauge devices (11-16) with gauging heads (70, 71) and elements for coupling to a support. The coupling elements are substantially constituted by parallel shafts (29-32) displ... | 11/09/1993 |
| 5205047 | Method and apparatus for dynamically checking dimensions of mechanical parts A method for checking dimensions of parts foresees the use of a gauging head (2) with at least a movable feeler (14) that contacts the surface (6) of the part (4) to be checked and a transducer (20) that provides a signal responsive to the position of the... | 04/27/1993 |
| 5157845 | Device for checking linear dimensions of parts Device comprising a support (21-23) with a seat (27, 27') housing a measuring cell (24, 24') having a feeler (6, 6') adapted to contact the part to be checked and with a strain gauge transducer (12-17) for detecting the feeler position. In order to obtain... | 10/27/1992 |
| 5123173 | Apparatus for checking features of parts Checking apparatus comprising a support (1); sensing means (19; 71) adapted to provide signals depending on the features of the checked parts (3) with reference means (41, 42; 70) adapted to cooperate with the parts; and connection means (30; 66; 93) with... | 06/23/1992 |
| 5113592 | Master part and relevant manufacturing process A reference master part for linear dimensions and/or geometrical and/or shape features of determined workpieces (30) comprises precision-machined surfaces having mutual spatial arrangements such as to provide known references for said dimensions, etc. For... | 05/19/1992 |
| 5088206 | Apparatus and method for checking mechanical parts The geometrical features of a part (6) having center seats are electronically checked by processing signals of gauging heads (14-17) that relate to linear dimensions of the part together with signals of other gauging heads (30, 31) adapted to define a ref... | 02/18/1992 |
| 5086569 | Apparatus for checking dimensions of workpieces An apparatus for checking features of workpieces with rotational symmetry defining a geometrical axis, which includes a base, rest devices fixed to the base for supporting the workpiece with the geometrical axis horizontally arranged, and a support struct... | 02/11/1992 |
| 5083384 | Device for checking linear dimensions of parts Device comprising a support (50) with a seat (51) housing a measuring cell (53) with a movable armset (54) having a feeler (61) adapted to contact the part to be checked. In order to reduce the overall dimensions of the device, while guaranteeing the seat... | 01/28/1992 |
| 5068974 | Apparatus for checking dimensions of workpieces An apparatus for checking linear dimensions and other features of workpieces (42) comprises a support structure (2) carrying reference and support devices (40) adapted for supporting the workpiece to be checked (42). A linear support frame (210) carrying ... | 12/03/1991 |
| 4993163 | Gauge for checking linear dimensions of mechanical pieces Gauge for checking linear dimensions of mechanical pieces comprising a support, two arms movable with respect to the support, two feelers respectively fixed to the arms for contacting the piece to be checked and a position transducer having two mutually m... | 02/19/1991 |
| 4910879 | Probe for use in apparatus for checking linear dimensions of mechanical pieces Probe for use in apparatus for checking linear dimensions of mechanical pieces including a support, an arm-set carried by the support and having a movable arm carying a feeler for contacting the piece to be checked, and a protective diaphragm coupled to t... | 03/27/1990 |
| 4907345 | Apparatus for checking diametral dimensions of mechanical pieces An apparatus for checking diametral dimensions comprises a resilient protection element, with a substantially tubular shape, for protecting an internal arm-set by preventing any foreign matter, like chips, from entering inside. In order to obtain a protec... | 03/13/1990 |
| 4829717 | Method and relevant apparatus for controlling the machining of mechanical pieces The machining of mechanical pieces in a grinding machine is controlled depending on in-process and post-process measurements of the pieces. The post-process measurement is carried out by using the same in-process measurement means, with the provision of d... | 05/16/1989 |
| 4787149 | Gauge for checking linear dimensions of mechanical pieces Gauge for checking linear dimensions of mechanical pieces comprising a support, two arms movable with respect to the support, two feelers respectively fixed to the arms for contacting the piece to be checked and a position transducer having two mutually m... | 11/29/1988 |
| 4756126 | Method for controlling the machining of mechanical pieces The machining of mechanical pieces in a grinding machine is controlled depending on in-process and post-process measurements of the pieces. The post-process measurement is carried out by using the same in-process measurement means, with the provision of d... | 07/12/1988 |
| 4703587 | Method and relevant apparatus for controlling machine tools Two machine tools are provided with control systems for machining two different types of pieces to be matched to each other. In order to obtain small batches of relevant pieces that basically can be completely matched to one another, the control systems a... | 11/03/1987 |